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linux-stable/drivers/clk/clk-qoriq.c
Linus Torvalds 916f562fb2 This round of clk driver and framework updates is heavy on the driver update 
side. The two main highlights in the core framework are the addition of an bulk
 clk_get API that handles optional clks and an extra debugfs file that tells the
 developer about the current parent of a clk.
 
 The driver updates are dominated by i.MX in the diffstat, but that is mostly
 because that SoC has started converting to the clk_hw style of clk
 registration. The next big update is in the Amlogic meson clk driver that
 gained some support for audio, cpu, and temperature clks while fixing some PLL
 issues. Finally, the biggest thing that stands out is the conversion of a large
 part of the Allwinner sunxi-ng driver to the new clk parent scheme that uses
 less strings and more pointer comparisons to match clk parents and children up.
 
 In general, it looks like we have a lot of little fixes and tweaks here and
 there to clk data along with the normal addition of a handful of new drivers
 and a couple new core framework features.
 
 Core:
  - Add a 'clk_parent' file in clk debugfs
  - Add a clk_bulk_get_optional() API (with devm too)
 
 New Drivers:
  - Support gated clk controller on MIPS based BCM63XX SoCs
  - Support SiLabs Si5341 and Si5340 chips
  - Support for CPU clks on Raspberry Pi devices
  - Audsys clock driver for MediaTek MT8516 SoCs
 
 Updates:
  - Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
  - Small frequency support for SiLabs Si544 chips
  - Slow clk support for AT91 SAM9X60 SoCs
  - Remove dead code in various clk drivers (-Wunused)
  - Support for Marvell 98DX1135 SoCs
  - Get duty cycle of generic pwm clks
  - Improvement in mmc phase calculation and cleanup of some rate defintions
  - Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
  - Add GPIO, SNVS and GIC clocks for i.MX8 drivers
  - Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
  - Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
  - Add clks for new Exynos5422 Dynamic Memory Controller driver
  - Clock definition for Exynos4412 Mali
  - Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
  - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
  - Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
  - TI clock probing done from DT by default instead of firmware
  - Fix Amlogic Meson mpll fractional part and spread sprectrum issues
  - Add Amlogic meson8 audio clocks
  - Add Amlogic g12a temperature sensors clocks
  - Add Amlogic g12a and g12b cpu clocks
  - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
  - Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
  - Add Clock Domain support on Renesas RZ/N1
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This round of clk driver and framework updates is heavy on the driver
  update side. The two main highlights in the core framework are the
  addition of an bulk clk_get API that handles optional clks and an
  extra debugfs file that tells the developer about the current parent
  of a clk.

  The driver updates are dominated by i.MX in the diffstat, but that is
  mostly because that SoC has started converting to the clk_hw style of
  clk registration. The next big update is in the Amlogic meson clk
  driver that gained some support for audio, cpu, and temperature clks
  while fixing some PLL issues. Finally, the biggest thing that stands
  out is the conversion of a large part of the Allwinner sunxi-ng driver
  to the new clk parent scheme that uses less strings and more pointer
  comparisons to match clk parents and children up.

  In general, it looks like we have a lot of little fixes and tweaks
  here and there to clk data along with the normal addition of a handful
  of new drivers and a couple new core framework features.

  Core:
   - Add a 'clk_parent' file in clk debugfs
   - Add a clk_bulk_get_optional() API (with devm too)

  New Drivers:
   - Support gated clk controller on MIPS based BCM63XX SoCs
   - Support SiLabs Si5341 and Si5340 chips
   - Support for CPU clks on Raspberry Pi devices
   - Audsys clock driver for MediaTek MT8516 SoCs

  Updates:
   - Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
   - Small frequency support for SiLabs Si544 chips
   - Slow clk support for AT91 SAM9X60 SoCs
   - Remove dead code in various clk drivers (-Wunused)
   - Support for Marvell 98DX1135 SoCs
   - Get duty cycle of generic pwm clks
   - Improvement in mmc phase calculation and cleanup of some rate defintions
   - Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
   - Add GPIO, SNVS and GIC clocks for i.MX8 drivers
   - Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
   - Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
   - Add clks for new Exynos5422 Dynamic Memory Controller driver
   - Clock definition for Exynos4412 Mali
   - Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
   - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
   - Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
   - TI clock probing done from DT by default instead of firmware
   - Fix Amlogic Meson mpll fractional part and spread sprectrum issues
   - Add Amlogic meson8 audio clocks
   - Add Amlogic g12a temperature sensors clocks
   - Add Amlogic g12a and g12b cpu clocks
   - Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
   - Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
   - Add Clock Domain support on Renesas RZ/N1"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (190 commits)
  clk: consoldiate the __clk_get_hw() declarations
  clk: sprd: Add check for return value of sprd_clk_regmap_init()
  clk: lochnagar: Update DT binding doc to include the primary SPDIF MCLK
  clk: Add Si5341/Si5340 driver
  dt-bindings: clock: Add silabs,si5341
  clk: clk-si544: Implement small frequency change support
  clk: add BCM63XX gated clock controller driver
  devicetree: document the BCM63XX gated clock bindings
  clk: at91: sckc: use dedicated functions to unregister clock
  clk: at91: sckc: improve error path for sama5d4 sck registration
  clk: at91: sckc: remove unnecessary line
  clk: at91: sckc: improve error path for sam9x5 sck register
  clk: at91: sckc: add support to free slow clock osclillator
  clk: at91: sckc: add support to free slow rc oscillator
  clk: at91: sckc: add support to free slow oscillator
  clk: rockchip: export HDMIPHY clock on rk3228
  clk: rockchip: add watchdog pclk on rk3328
  clk: rockchip: add clock id for hdmi_phy special clock on rk3228
  clk: rockchip: add clock id for watchdog pclk on rk3328
  clk: at91: sckc: add support for SAM9X60
  ...
2019-07-17 10:07:48 -07:00

1526 lines
35 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2013 Freescale Semiconductor, Inc.
*
* clock driver for Freescale QorIQ SoCs.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/fsl/guts.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/of.h>
#include <linux/slab.h>
#define PLL_DIV1 0
#define PLL_DIV2 1
#define PLL_DIV3 2
#define PLL_DIV4 3
#define PLATFORM_PLL 0
#define CGA_PLL1 1
#define CGA_PLL2 2
#define CGA_PLL3 3
#define CGA_PLL4 4 /* only on clockgen-1.0, which lacks CGB */
#define CGB_PLL1 4
#define CGB_PLL2 5
#define MAX_PLL_DIV 16
struct clockgen_pll_div {
struct clk *clk;
char name[32];
};
struct clockgen_pll {
struct clockgen_pll_div div[MAX_PLL_DIV];
};
#define CLKSEL_VALID 1
#define CLKSEL_80PCT 2 /* Only allowed if PLL <= 80% of max cpu freq */
struct clockgen_sourceinfo {
u32 flags; /* CLKSEL_xxx */
int pll; /* CGx_PLLn */
int div; /* PLL_DIVn */
};
#define NUM_MUX_PARENTS 16
struct clockgen_muxinfo {
struct clockgen_sourceinfo clksel[NUM_MUX_PARENTS];
};
#define NUM_HWACCEL 5
#define NUM_CMUX 8
struct clockgen;
/*
* cmux freq must be >= platform pll.
* If not set, cmux freq must be >= platform pll/2
*/
#define CG_CMUX_GE_PLAT 1
#define CG_PLL_8BIT 2 /* PLLCnGSR[CFG] is 8 bits, not 6 */
#define CG_VER3 4 /* version 3 cg: reg layout different */
#define CG_LITTLE_ENDIAN 8
struct clockgen_chipinfo {
const char *compat, *guts_compat;
const struct clockgen_muxinfo *cmux_groups[2];
const struct clockgen_muxinfo *hwaccel[NUM_HWACCEL];
void (*init_periph)(struct clockgen *cg);
int cmux_to_group[NUM_CMUX + 1]; /* array should be -1 terminated */
u32 pll_mask; /* 1 << n bit set if PLL n is valid */
u32 flags; /* CG_xxx */
};
struct clockgen {
struct device_node *node;
void __iomem *regs;
struct clockgen_chipinfo info; /* mutable copy */
struct clk *sysclk, *coreclk;
struct clockgen_pll pll[6];
struct clk *cmux[NUM_CMUX];
struct clk *hwaccel[NUM_HWACCEL];
struct clk *fman[2];
struct ccsr_guts __iomem *guts;
};
static struct clockgen clockgen;
static void cg_out(struct clockgen *cg, u32 val, u32 __iomem *reg)
{
if (cg->info.flags & CG_LITTLE_ENDIAN)
iowrite32(val, reg);
else
iowrite32be(val, reg);
}
static u32 cg_in(struct clockgen *cg, u32 __iomem *reg)
{
u32 val;
if (cg->info.flags & CG_LITTLE_ENDIAN)
val = ioread32(reg);
else
val = ioread32be(reg);
return val;
}
static const struct clockgen_muxinfo p2041_cmux_grp1 = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
}
};
static const struct clockgen_muxinfo p2041_cmux_grp2 = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo p5020_cmux_grp1 = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
}
};
static const struct clockgen_muxinfo p5020_cmux_grp2 = {
{
[0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo p5040_cmux_grp1 = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo p5040_cmux_grp2 = {
{
[0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo p4080_cmux_grp1 = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
[8] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL3, PLL_DIV1 },
}
};
static const struct clockgen_muxinfo p4080_cmux_grp2 = {
{
[0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
[8] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
[9] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
[12] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV1 },
[13] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo t1023_cmux = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo t1040_cmux = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
[1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
[4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
[5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo clockgen2_cmux_cga = {
{
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL3, PLL_DIV4 },
},
};
static const struct clockgen_muxinfo clockgen2_cmux_cga12 = {
{
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
},
};
static const struct clockgen_muxinfo clockgen2_cmux_cgb = {
{
{ CLKSEL_VALID, CGB_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGB_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
},
};
static const struct clockgen_muxinfo ls1028a_hwa1 = {
{
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1028a_hwa2 = {
{
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1028a_hwa3 = {
{
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1028a_hwa4 = {
{
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1043a_hwa1 = {
{
{},
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{},
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1043a_hwa2 = {
{
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1046a_hwa1 = {
{
{},
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo ls1046a_hwa2 = {
{
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
{},
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
},
};
static const struct clockgen_muxinfo ls1012a_cmux = {
{
[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{},
[2] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
}
};
static const struct clockgen_muxinfo t1023_hwa1 = {
{
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo t1023_hwa2 = {
{
[6] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
},
};
static const struct clockgen_muxinfo t2080_hwa1 = {
{
{},
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo t2080_hwa2 = {
{
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo t4240_hwa1 = {
{
{ CLKSEL_VALID, PLATFORM_PLL, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
{ CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
{},
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
{ CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
},
};
static const struct clockgen_muxinfo t4240_hwa4 = {
{
[2] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
[3] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
[4] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
[5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
[6] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
},
};
static const struct clockgen_muxinfo t4240_hwa5 = {
{
[2] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
[3] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV3 },
[4] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
[5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
[6] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
[7] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
},
};
#define RCWSR7_FM1_CLK_SEL 0x40000000
#define RCWSR7_FM2_CLK_SEL 0x20000000
#define RCWSR7_HWA_ASYNC_DIV 0x04000000
static void __init p2041_init_periph(struct clockgen *cg)
{
u32 reg;
reg = ioread32be(&cg->guts->rcwsr[7]);
if (reg & RCWSR7_FM1_CLK_SEL)
cg->fman[0] = cg->pll[CGA_PLL2].div[PLL_DIV2].clk;
else
cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
}
static void __init p4080_init_periph(struct clockgen *cg)
{
u32 reg;
reg = ioread32be(&cg->guts->rcwsr[7]);
if (reg & RCWSR7_FM1_CLK_SEL)
cg->fman[0] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
else
cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
if (reg & RCWSR7_FM2_CLK_SEL)
cg->fman[1] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
else
cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
}
static void __init p5020_init_periph(struct clockgen *cg)
{
u32 reg;
int div = PLL_DIV2;
reg = ioread32be(&cg->guts->rcwsr[7]);
if (reg & RCWSR7_HWA_ASYNC_DIV)
div = PLL_DIV4;
if (reg & RCWSR7_FM1_CLK_SEL)
cg->fman[0] = cg->pll[CGA_PLL2].div[div].clk;
else
cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
}
static void __init p5040_init_periph(struct clockgen *cg)
{
u32 reg;
int div = PLL_DIV2;
reg = ioread32be(&cg->guts->rcwsr[7]);
if (reg & RCWSR7_HWA_ASYNC_DIV)
div = PLL_DIV4;
if (reg & RCWSR7_FM1_CLK_SEL)
cg->fman[0] = cg->pll[CGA_PLL3].div[div].clk;
else
cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
if (reg & RCWSR7_FM2_CLK_SEL)
cg->fman[1] = cg->pll[CGA_PLL3].div[div].clk;
else
cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
}
static void __init t1023_init_periph(struct clockgen *cg)
{
cg->fman[0] = cg->hwaccel[1];
}
static void __init t1040_init_periph(struct clockgen *cg)
{
cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk;
}
static void __init t2080_init_periph(struct clockgen *cg)
{
cg->fman[0] = cg->hwaccel[0];
}
static void __init t4240_init_periph(struct clockgen *cg)
{
cg->fman[0] = cg->hwaccel[3];
cg->fman[1] = cg->hwaccel[4];
}
static const struct clockgen_chipinfo chipinfo[] = {
{
.compat = "fsl,b4420-clockgen",
.guts_compat = "fsl,b4860-device-config",
.init_periph = t2080_init_periph,
.cmux_groups = {
&clockgen2_cmux_cga12, &clockgen2_cmux_cgb
},
.hwaccel = {
&t2080_hwa1
},
.cmux_to_group = {
0, 1, 1, 1, -1
},
.pll_mask = 0x3f,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,b4860-clockgen",
.guts_compat = "fsl,b4860-device-config",
.init_periph = t2080_init_periph,
.cmux_groups = {
&clockgen2_cmux_cga12, &clockgen2_cmux_cgb
},
.hwaccel = {
&t2080_hwa1
},
.cmux_to_group = {
0, 1, 1, 1, -1
},
.pll_mask = 0x3f,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,ls1021a-clockgen",
.cmux_groups = {
&t1023_cmux
},
.cmux_to_group = {
0, -1
},
.pll_mask = 0x03,
},
{
.compat = "fsl,ls1028a-clockgen",
.cmux_groups = {
&clockgen2_cmux_cga12
},
.hwaccel = {
&ls1028a_hwa1, &ls1028a_hwa2,
&ls1028a_hwa3, &ls1028a_hwa4
},
.cmux_to_group = {
0, 0, 0, 0, -1
},
.pll_mask = 0x07,
.flags = CG_VER3 | CG_LITTLE_ENDIAN,
},
{
.compat = "fsl,ls1043a-clockgen",
.init_periph = t2080_init_periph,
.cmux_groups = {
&t1040_cmux
},
.hwaccel = {
&ls1043a_hwa1, &ls1043a_hwa2
},
.cmux_to_group = {
0, -1
},
.pll_mask = 0x07,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,ls1046a-clockgen",
.init_periph = t2080_init_periph,
.cmux_groups = {
&t1040_cmux
},
.hwaccel = {
&ls1046a_hwa1, &ls1046a_hwa2
},
.cmux_to_group = {
0, -1
},
.pll_mask = 0x07,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,ls1088a-clockgen",
.cmux_groups = {
&clockgen2_cmux_cga12
},
.cmux_to_group = {
0, 0, -1
},
.pll_mask = 0x07,
.flags = CG_VER3 | CG_LITTLE_ENDIAN,
},
{
.compat = "fsl,ls1012a-clockgen",
.cmux_groups = {
&ls1012a_cmux
},
.cmux_to_group = {
0, -1
},
.pll_mask = 0x03,
},
{
.compat = "fsl,ls2080a-clockgen",
.cmux_groups = {
&clockgen2_cmux_cga12, &clockgen2_cmux_cgb
},
.cmux_to_group = {
0, 0, 1, 1, -1
},
.pll_mask = 0x37,
.flags = CG_VER3 | CG_LITTLE_ENDIAN,
},
{
.compat = "fsl,lx2160a-clockgen",
.cmux_groups = {
&clockgen2_cmux_cga12, &clockgen2_cmux_cgb
},
.cmux_to_group = {
0, 0, 0, 0, 1, 1, 1, 1, -1
},
.pll_mask = 0x37,
.flags = CG_VER3 | CG_LITTLE_ENDIAN,
},
{
.compat = "fsl,p2041-clockgen",
.guts_compat = "fsl,qoriq-device-config-1.0",
.init_periph = p2041_init_periph,
.cmux_groups = {
&p2041_cmux_grp1, &p2041_cmux_grp2
},
.cmux_to_group = {
0, 0, 1, 1, -1
},
.pll_mask = 0x07,
},
{
.compat = "fsl,p3041-clockgen",
.guts_compat = "fsl,qoriq-device-config-1.0",
.init_periph = p2041_init_periph,
.cmux_groups = {
&p2041_cmux_grp1, &p2041_cmux_grp2
},
.cmux_to_group = {
0, 0, 1, 1, -1
},
.pll_mask = 0x07,
},
{
.compat = "fsl,p4080-clockgen",
.guts_compat = "fsl,qoriq-device-config-1.0",
.init_periph = p4080_init_periph,
.cmux_groups = {
&p4080_cmux_grp1, &p4080_cmux_grp2
},
.cmux_to_group = {
0, 0, 0, 0, 1, 1, 1, 1, -1
},
.pll_mask = 0x1f,
},
{
.compat = "fsl,p5020-clockgen",
.guts_compat = "fsl,qoriq-device-config-1.0",
.init_periph = p5020_init_periph,
.cmux_groups = {
&p2041_cmux_grp1, &p2041_cmux_grp2
},
.cmux_to_group = {
0, 1, -1
},
.pll_mask = 0x07,
},
{
.compat = "fsl,p5040-clockgen",
.guts_compat = "fsl,p5040-device-config",
.init_periph = p5040_init_periph,
.cmux_groups = {
&p5040_cmux_grp1, &p5040_cmux_grp2
},
.cmux_to_group = {
0, 0, 1, 1, -1
},
.pll_mask = 0x0f,
},
{
.compat = "fsl,t1023-clockgen",
.guts_compat = "fsl,t1023-device-config",
.init_periph = t1023_init_periph,
.cmux_groups = {
&t1023_cmux
},
.hwaccel = {
&t1023_hwa1, &t1023_hwa2
},
.cmux_to_group = {
0, 0, -1
},
.pll_mask = 0x03,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,t1040-clockgen",
.guts_compat = "fsl,t1040-device-config",
.init_periph = t1040_init_periph,
.cmux_groups = {
&t1040_cmux
},
.cmux_to_group = {
0, 0, 0, 0, -1
},
.pll_mask = 0x07,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,t2080-clockgen",
.guts_compat = "fsl,t2080-device-config",
.init_periph = t2080_init_periph,
.cmux_groups = {
&clockgen2_cmux_cga12
},
.hwaccel = {
&t2080_hwa1, &t2080_hwa2
},
.cmux_to_group = {
0, -1
},
.pll_mask = 0x07,
.flags = CG_PLL_8BIT,
},
{
.compat = "fsl,t4240-clockgen",
.guts_compat = "fsl,t4240-device-config",
.init_periph = t4240_init_periph,
.cmux_groups = {
&clockgen2_cmux_cga, &clockgen2_cmux_cgb
},
.hwaccel = {
&t4240_hwa1, NULL, NULL, &t4240_hwa4, &t4240_hwa5
},
.cmux_to_group = {
0, 0, 1, -1
},
.pll_mask = 0x3f,
.flags = CG_PLL_8BIT,
},
{},
};
struct mux_hwclock {
struct clk_hw hw;
struct clockgen *cg;
const struct clockgen_muxinfo *info;
u32 __iomem *reg;
u8 parent_to_clksel[NUM_MUX_PARENTS];
s8 clksel_to_parent[NUM_MUX_PARENTS];
int num_parents;
};
#define to_mux_hwclock(p) container_of(p, struct mux_hwclock, hw)
#define CLKSEL_MASK 0x78000000
#define CLKSEL_SHIFT 27
static int mux_set_parent(struct clk_hw *hw, u8 idx)
{
struct mux_hwclock *hwc = to_mux_hwclock(hw);
u32 clksel;
if (idx >= hwc->num_parents)
return -EINVAL;
clksel = hwc->parent_to_clksel[idx];
cg_out(hwc->cg, (clksel << CLKSEL_SHIFT) & CLKSEL_MASK, hwc->reg);
return 0;
}
static u8 mux_get_parent(struct clk_hw *hw)
{
struct mux_hwclock *hwc = to_mux_hwclock(hw);
u32 clksel;
s8 ret;
clksel = (cg_in(hwc->cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
ret = hwc->clksel_to_parent[clksel];
if (ret < 0) {
pr_err("%s: mux at %p has bad clksel\n", __func__, hwc->reg);
return 0;
}
return ret;
}
static const struct clk_ops cmux_ops = {
.get_parent = mux_get_parent,
.set_parent = mux_set_parent,
};
/*
* Don't allow setting for now, as the clock options haven't been
* sanitized for additional restrictions.
*/
static const struct clk_ops hwaccel_ops = {
.get_parent = mux_get_parent,
};
static const struct clockgen_pll_div *get_pll_div(struct clockgen *cg,
struct mux_hwclock *hwc,
int idx)
{
int pll, div;
if (!(hwc->info->clksel[idx].flags & CLKSEL_VALID))
return NULL;
pll = hwc->info->clksel[idx].pll;
div = hwc->info->clksel[idx].div;
return &cg->pll[pll].div[div];
}
static struct clk * __init create_mux_common(struct clockgen *cg,
struct mux_hwclock *hwc,
const struct clk_ops *ops,
unsigned long min_rate,
unsigned long max_rate,
unsigned long pct80_rate,
const char *fmt, int idx)
{
struct clk_init_data init = {};
struct clk *clk;
const struct clockgen_pll_div *div;
const char *parent_names[NUM_MUX_PARENTS];
char name[32];
int i, j;
snprintf(name, sizeof(name), fmt, idx);
for (i = 0, j = 0; i < NUM_MUX_PARENTS; i++) {
unsigned long rate;
hwc->clksel_to_parent[i] = -1;
div = get_pll_div(cg, hwc, i);
if (!div)
continue;
rate = clk_get_rate(div->clk);
if (hwc->info->clksel[i].flags & CLKSEL_80PCT &&
rate > pct80_rate)
continue;
if (rate < min_rate)
continue;
if (rate > max_rate)
continue;
parent_names[j] = div->name;
hwc->parent_to_clksel[j] = i;
hwc->clksel_to_parent[i] = j;
j++;
}
init.name = name;
init.ops = ops;
init.parent_names = parent_names;
init.num_parents = hwc->num_parents = j;
init.flags = 0;
hwc->hw.init = &init;
hwc->cg = cg;
clk = clk_register(NULL, &hwc->hw);
if (IS_ERR(clk)) {
pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
PTR_ERR(clk));
kfree(hwc);
return NULL;
}
return clk;
}
static struct clk * __init create_one_cmux(struct clockgen *cg, int idx)
{
struct mux_hwclock *hwc;
const struct clockgen_pll_div *div;
unsigned long plat_rate, min_rate;
u64 max_rate, pct80_rate;
u32 clksel;
hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
if (!hwc)
return NULL;
if (cg->info.flags & CG_VER3)
hwc->reg = cg->regs + 0x70000 + 0x20 * idx;
else
hwc->reg = cg->regs + 0x20 * idx;
hwc->info = cg->info.cmux_groups[cg->info.cmux_to_group[idx]];
/*
* Find the rate for the default clksel, and treat it as the
* maximum rated core frequency. If this is an incorrect
* assumption, certain clock options (possibly including the
* default clksel) may be inappropriately excluded on certain
* chips.
*/
clksel = (cg_in(cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
div = get_pll_div(cg, hwc, clksel);
if (!div) {
kfree(hwc);
return NULL;
}
max_rate = clk_get_rate(div->clk);
pct80_rate = max_rate * 8;
do_div(pct80_rate, 10);
plat_rate = clk_get_rate(cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk);
if (cg->info.flags & CG_CMUX_GE_PLAT)
min_rate = plat_rate;
else
min_rate = plat_rate / 2;
return create_mux_common(cg, hwc, &cmux_ops, min_rate, max_rate,
pct80_rate, "cg-cmux%d", idx);
}
static struct clk * __init create_one_hwaccel(struct clockgen *cg, int idx)
{
struct mux_hwclock *hwc;
hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
if (!hwc)
return NULL;
hwc->reg = cg->regs + 0x20 * idx + 0x10;
hwc->info = cg->info.hwaccel[idx];
return create_mux_common(cg, hwc, &hwaccel_ops, 0, ULONG_MAX, 0,
"cg-hwaccel%d", idx);
}
static void __init create_muxes(struct clockgen *cg)
{
int i;
for (i = 0; i < ARRAY_SIZE(cg->cmux); i++) {
if (cg->info.cmux_to_group[i] < 0)
break;
if (cg->info.cmux_to_group[i] >=
ARRAY_SIZE(cg->info.cmux_groups)) {
WARN_ON_ONCE(1);
continue;
}
cg->cmux[i] = create_one_cmux(cg, i);
}
for (i = 0; i < ARRAY_SIZE(cg->hwaccel); i++) {
if (!cg->info.hwaccel[i])
continue;
cg->hwaccel[i] = create_one_hwaccel(cg, i);
}
}
static void __init clockgen_init(struct device_node *np);
/*
* Legacy nodes may get probed before the parent clockgen node.
* It is assumed that device trees with legacy nodes will not
* contain a "clocks" property -- otherwise the input clocks may
* not be initialized at this point.
*/
static void __init legacy_init_clockgen(struct device_node *np)
{
if (!clockgen.node)
clockgen_init(of_get_parent(np));
}
/* Legacy node */
static void __init core_mux_init(struct device_node *np)
{
struct clk *clk;
struct resource res;
int idx, rc;
legacy_init_clockgen(np);
if (of_address_to_resource(np, 0, &res))
return;
idx = (res.start & 0xf0) >> 5;
clk = clockgen.cmux[idx];
rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
if (rc) {
pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
__func__, np, rc);
return;
}
}
static struct clk __init
*sysclk_from_fixed(struct device_node *node, const char *name)
{
u32 rate;
if (of_property_read_u32(node, "clock-frequency", &rate))
return ERR_PTR(-ENODEV);
return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
}
static struct clk __init *input_clock(const char *name, struct clk *clk)
{
const char *input_name;
/* Register the input clock under the desired name. */
input_name = __clk_get_name(clk);
clk = clk_register_fixed_factor(NULL, name, input_name,
0, 1, 1);
if (IS_ERR(clk))
pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
PTR_ERR(clk));
return clk;
}
static struct clk __init *input_clock_by_name(const char *name,
const char *dtname)
{
struct clk *clk;
clk = of_clk_get_by_name(clockgen.node, dtname);
if (IS_ERR(clk))
return clk;
return input_clock(name, clk);
}
static struct clk __init *input_clock_by_index(const char *name, int idx)
{
struct clk *clk;
clk = of_clk_get(clockgen.node, 0);
if (IS_ERR(clk))
return clk;
return input_clock(name, clk);
}
static struct clk * __init create_sysclk(const char *name)
{
struct device_node *sysclk;
struct clk *clk;
clk = sysclk_from_fixed(clockgen.node, name);
if (!IS_ERR(clk))
return clk;
clk = input_clock_by_name(name, "sysclk");
if (!IS_ERR(clk))
return clk;
clk = input_clock_by_index(name, 0);
if (!IS_ERR(clk))
return clk;
sysclk = of_get_child_by_name(clockgen.node, "sysclk");
if (sysclk) {
clk = sysclk_from_fixed(sysclk, name);
if (!IS_ERR(clk))
return clk;
}
pr_err("%s: No input sysclk\n", __func__);
return NULL;
}
static struct clk * __init create_coreclk(const char *name)
{
struct clk *clk;
clk = input_clock_by_name(name, "coreclk");
if (!IS_ERR(clk))
return clk;
/*
* This indicates a mix of legacy nodes with the new coreclk
* mechanism, which should never happen. If this error occurs,
* don't use the wrong input clock just because coreclk isn't
* ready yet.
*/
if (WARN_ON(PTR_ERR(clk) == -EPROBE_DEFER))
return clk;
return NULL;
}
/* Legacy node */
static void __init sysclk_init(struct device_node *node)
{
struct clk *clk;
legacy_init_clockgen(node);
clk = clockgen.sysclk;
if (clk)
of_clk_add_provider(node, of_clk_src_simple_get, clk);
}
#define PLL_KILL BIT(31)
static void __init create_one_pll(struct clockgen *cg, int idx)
{
u32 __iomem *reg;
u32 mult;
struct clockgen_pll *pll = &cg->pll[idx];
const char *input = "cg-sysclk";
int i;
if (!(cg->info.pll_mask & (1 << idx)))
return;
if (cg->coreclk && idx != PLATFORM_PLL) {
if (IS_ERR(cg->coreclk))
return;
input = "cg-coreclk";
}
if (cg->info.flags & CG_VER3) {
switch (idx) {
case PLATFORM_PLL:
reg = cg->regs + 0x60080;
break;
case CGA_PLL1:
reg = cg->regs + 0x80;
break;
case CGA_PLL2:
reg = cg->regs + 0xa0;
break;
case CGB_PLL1:
reg = cg->regs + 0x10080;
break;
case CGB_PLL2:
reg = cg->regs + 0x100a0;
break;
default:
WARN_ONCE(1, "index %d\n", idx);
return;
}
} else {
if (idx == PLATFORM_PLL)
reg = cg->regs + 0xc00;
else
reg = cg->regs + 0x800 + 0x20 * (idx - 1);
}
/* Get the multiple of PLL */
mult = cg_in(cg, reg);
/* Check if this PLL is disabled */
if (mult & PLL_KILL) {
pr_debug("%s(): pll %p disabled\n", __func__, reg);
return;
}
if ((cg->info.flags & CG_VER3) ||
((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL))
mult = (mult & GENMASK(8, 1)) >> 1;
else
mult = (mult & GENMASK(6, 1)) >> 1;
for (i = 0; i < ARRAY_SIZE(pll->div); i++) {
struct clk *clk;
int ret;
/*
* For platform PLL, there are MAX_PLL_DIV divider clocks.
* For core PLL, there are 4 divider clocks at most.
*/
if (idx != PLATFORM_PLL && i >= 4)
break;
snprintf(pll->div[i].name, sizeof(pll->div[i].name),
"cg-pll%d-div%d", idx, i + 1);
clk = clk_register_fixed_factor(NULL,
pll->div[i].name, input, 0, mult, i + 1);
if (IS_ERR(clk)) {
pr_err("%s: %s: register failed %ld\n",
__func__, pll->div[i].name, PTR_ERR(clk));
continue;
}
pll->div[i].clk = clk;
ret = clk_register_clkdev(clk, pll->div[i].name, NULL);
if (ret != 0)
pr_err("%s: %s: register to lookup table failed %d\n",
__func__, pll->div[i].name, ret);
}
}
static void __init create_plls(struct clockgen *cg)
{
int i;
for (i = 0; i < ARRAY_SIZE(cg->pll); i++)
create_one_pll(cg, i);
}
static void __init legacy_pll_init(struct device_node *np, int idx)
{
struct clockgen_pll *pll;
struct clk_onecell_data *onecell_data;
struct clk **subclks;
int count, rc;
legacy_init_clockgen(np);
pll = &clockgen.pll[idx];
count = of_property_count_strings(np, "clock-output-names");
BUILD_BUG_ON(ARRAY_SIZE(pll->div) < 4);
subclks = kcalloc(4, sizeof(struct clk *), GFP_KERNEL);
if (!subclks)
return;
onecell_data = kmalloc(sizeof(*onecell_data), GFP_KERNEL);
if (!onecell_data)
goto err_clks;
if (count <= 3) {
subclks[0] = pll->div[0].clk;
subclks[1] = pll->div[1].clk;
subclks[2] = pll->div[3].clk;
} else {
subclks[0] = pll->div[0].clk;
subclks[1] = pll->div[1].clk;
subclks[2] = pll->div[2].clk;
subclks[3] = pll->div[3].clk;
}
onecell_data->clks = subclks;
onecell_data->clk_num = count;
rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
if (rc) {
pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
__func__, np, rc);
goto err_cell;
}
return;
err_cell:
kfree(onecell_data);
err_clks:
kfree(subclks);
}
/* Legacy node */
static void __init pltfrm_pll_init(struct device_node *np)
{
legacy_pll_init(np, PLATFORM_PLL);
}
/* Legacy node */
static void __init core_pll_init(struct device_node *np)
{
struct resource res;
int idx;
if (of_address_to_resource(np, 0, &res))
return;
if ((res.start & 0xfff) == 0xc00) {
/*
* ls1021a devtree labels the platform PLL
* with the core PLL compatible
*/
pltfrm_pll_init(np);
} else {
idx = (res.start & 0xf0) >> 5;
legacy_pll_init(np, CGA_PLL1 + idx);
}
}
static struct clk *clockgen_clk_get(struct of_phandle_args *clkspec, void *data)
{
struct clockgen *cg = data;
struct clk *clk;
struct clockgen_pll *pll;
u32 type, idx;
if (clkspec->args_count < 2) {
pr_err("%s: insufficient phandle args\n", __func__);
return ERR_PTR(-EINVAL);
}
type = clkspec->args[0];
idx = clkspec->args[1];
switch (type) {
case 0:
if (idx != 0)
goto bad_args;
clk = cg->sysclk;
break;
case 1:
if (idx >= ARRAY_SIZE(cg->cmux))
goto bad_args;
clk = cg->cmux[idx];
break;
case 2:
if (idx >= ARRAY_SIZE(cg->hwaccel))
goto bad_args;
clk = cg->hwaccel[idx];
break;
case 3:
if (idx >= ARRAY_SIZE(cg->fman))
goto bad_args;
clk = cg->fman[idx];
break;
case 4:
pll = &cg->pll[PLATFORM_PLL];
if (idx >= ARRAY_SIZE(pll->div))
goto bad_args;
clk = pll->div[idx].clk;
break;
case 5:
if (idx != 0)
goto bad_args;
clk = cg->coreclk;
if (IS_ERR(clk))
clk = NULL;
break;
default:
goto bad_args;
}
if (!clk)
return ERR_PTR(-ENOENT);
return clk;
bad_args:
pr_err("%s: Bad phandle args %u %u\n", __func__, type, idx);
return ERR_PTR(-EINVAL);
}
#ifdef CONFIG_PPC
#include <asm/mpc85xx.h>
static const u32 a4510_svrs[] __initconst = {
(SVR_P2040 << 8) | 0x10, /* P2040 1.0 */
(SVR_P2040 << 8) | 0x11, /* P2040 1.1 */
(SVR_P2041 << 8) | 0x10, /* P2041 1.0 */
(SVR_P2041 << 8) | 0x11, /* P2041 1.1 */
(SVR_P3041 << 8) | 0x10, /* P3041 1.0 */
(SVR_P3041 << 8) | 0x11, /* P3041 1.1 */
(SVR_P4040 << 8) | 0x20, /* P4040 2.0 */
(SVR_P4080 << 8) | 0x20, /* P4080 2.0 */
(SVR_P5010 << 8) | 0x10, /* P5010 1.0 */
(SVR_P5010 << 8) | 0x20, /* P5010 2.0 */
(SVR_P5020 << 8) | 0x10, /* P5020 1.0 */
(SVR_P5021 << 8) | 0x10, /* P5021 1.0 */
(SVR_P5040 << 8) | 0x10, /* P5040 1.0 */
};
#define SVR_SECURITY 0x80000 /* The Security (E) bit */
static bool __init has_erratum_a4510(void)
{
u32 svr = mfspr(SPRN_SVR);
int i;
svr &= ~SVR_SECURITY;
for (i = 0; i < ARRAY_SIZE(a4510_svrs); i++) {
if (svr == a4510_svrs[i])
return true;
}
return false;
}
#else
static bool __init has_erratum_a4510(void)
{
return false;
}
#endif
static void __init clockgen_init(struct device_node *np)
{
int i, ret;
bool is_old_ls1021a = false;
/* May have already been called by a legacy probe */
if (clockgen.node)
return;
clockgen.node = np;
clockgen.regs = of_iomap(np, 0);
if (!clockgen.regs &&
of_device_is_compatible(of_root, "fsl,ls1021a")) {
/* Compatibility hack for old, broken device trees */
clockgen.regs = ioremap(0x1ee1000, 0x1000);
is_old_ls1021a = true;
}
if (!clockgen.regs) {
pr_err("%s(): %pOFn: of_iomap() failed\n", __func__, np);
return;
}
for (i = 0; i < ARRAY_SIZE(chipinfo); i++) {
if (of_device_is_compatible(np, chipinfo[i].compat))
break;
if (is_old_ls1021a &&
!strcmp(chipinfo[i].compat, "fsl,ls1021a-clockgen"))
break;
}
if (i == ARRAY_SIZE(chipinfo)) {
pr_err("%s: unknown clockgen node %pOF\n", __func__, np);
goto err;
}
clockgen.info = chipinfo[i];
if (clockgen.info.guts_compat) {
struct device_node *guts;
guts = of_find_compatible_node(NULL, NULL,
clockgen.info.guts_compat);
if (guts) {
clockgen.guts = of_iomap(guts, 0);
if (!clockgen.guts) {
pr_err("%s: Couldn't map %pOF regs\n", __func__,
guts);
}
of_node_put(guts);
}
}
if (has_erratum_a4510())
clockgen.info.flags |= CG_CMUX_GE_PLAT;
clockgen.sysclk = create_sysclk("cg-sysclk");
clockgen.coreclk = create_coreclk("cg-coreclk");
create_plls(&clockgen);
create_muxes(&clockgen);
if (clockgen.info.init_periph)
clockgen.info.init_periph(&clockgen);
ret = of_clk_add_provider(np, clockgen_clk_get, &clockgen);
if (ret) {
pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
__func__, np, ret);
}
return;
err:
iounmap(clockgen.regs);
clockgen.regs = NULL;
}
CLK_OF_DECLARE(qoriq_clockgen_1, "fsl,qoriq-clockgen-1.0", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_2, "fsl,qoriq-clockgen-2.0", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_b4420, "fsl,b4420-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_b4860, "fsl,b4860-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1012a, "fsl,ls1012a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1021a, "fsl,ls1021a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1028a, "fsl,ls1028a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1043a, "fsl,ls1043a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1046a, "fsl,ls1046a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls1088a, "fsl,ls1088a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_ls2080a, "fsl,ls2080a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_lx2160a, "fsl,lx2160a-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_p2041, "fsl,p2041-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_p3041, "fsl,p3041-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_p4080, "fsl,p4080-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_p5020, "fsl,p5020-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_p5040, "fsl,p5040-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_t1023, "fsl,t1023-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_t1040, "fsl,t1040-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_t2080, "fsl,t2080-clockgen", clockgen_init);
CLK_OF_DECLARE(qoriq_clockgen_t4240, "fsl,t4240-clockgen", clockgen_init);
/* Legacy nodes */
CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init);
CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init);
CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init);
CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init);
CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init);
CLK_OF_DECLARE(qoriq_pltfrm_pll_1, "fsl,qoriq-platform-pll-1.0", pltfrm_pll_init);
CLK_OF_DECLARE(qoriq_pltfrm_pll_2, "fsl,qoriq-platform-pll-2.0", pltfrm_pll_init);
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