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linux-stable/arch/mips/ralink/mt7620.c
Paul Gortmaker 26dd3e4ff9 MIPS: Audit and remove any unnecessary uses of module.h 
Historically a lot of these existed because we did not have
a distinction between what was modular code and what was providing
support to modules via EXPORT_SYMBOL and friends.  That changed
when we forked out support for the latter into the export.h file.

This means we should be able to reduce the usage of module.h
in code that is obj-y Makefile or bool Kconfig.  In the case of
some code where it is modular, we can extend that to also include
files that are building basic support functionality but not related
to loading or registering the final module; such files also have
no need whatsoever for module.h

The advantage in removing such instances is that module.h itself
sources about 15 other headers; adding significantly to what we feed
cpp, and it can obscure what headers we are effectively using.

Since module.h might have been the implicit source for init.h
(for __init) and for export.h (for EXPORT_SYMBOL) we consider each
instance for the presence of either and replace/add as needed.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

Build coverage of all the mips defconfigs revealed the module.h
header was masking a couple of implicit include instances, so
we add the appropriate headers there.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: David Daney <david.daney@cavium.com>
Cc: John Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: "Steven J. Hill" <steven.hill@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15131/
[james.hogan@imgtec.com: Preserve sort order where it already exists]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-14 09:00:25 +00:00

719 lines
20 KiB
C
Raw Blame History

/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Parts of this file are based on Ralink's 2.6.21 BSP
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2013 John Crispin <john@phrozen.org>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/mipsregs.h>
#include <asm/mach-ralink/ralink_regs.h>
#include <asm/mach-ralink/mt7620.h>
#include <asm/mach-ralink/pinmux.h>
#include "common.h"
/* analog */
#define PMU0_CFG 0x88
#define PMU_SW_SET BIT(28)
#define A_DCDC_EN BIT(24)
#define A_SSC_PERI BIT(19)
#define A_SSC_GEN BIT(18)
#define A_SSC_M 0x3
#define A_SSC_S 16
#define A_DLY_M 0x7
#define A_DLY_S 8
#define A_VTUNE_M 0xff
/* digital */
#define PMU1_CFG 0x8C
#define DIG_SW_SEL BIT(25)
/* clock scaling */
#define CLKCFG_FDIV_MASK 0x1f00
#define CLKCFG_FDIV_USB_VAL 0x0300
#define CLKCFG_FFRAC_MASK 0x001f
#define CLKCFG_FFRAC_USB_VAL 0x0003
/* EFUSE bits */
#define EFUSE_MT7688 0x100000
/* DRAM type bit */
#define DRAM_TYPE_MT7628_MASK 0x1
/* does the board have sdram or ddram */
static int dram_type;
static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) };
static struct rt2880_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
static struct rt2880_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
static struct rt2880_pmx_func mdio_grp[] = {
FUNC("mdio", MT7620_GPIO_MODE_MDIO, 22, 2),
FUNC("refclk", MT7620_GPIO_MODE_MDIO_REFCLK, 22, 2),
};
static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 24, 12) };
static struct rt2880_pmx_func refclk_grp[] = { FUNC("spi refclk", 0, 37, 3) };
static struct rt2880_pmx_func ephy_grp[] = { FUNC("ephy", 0, 40, 5) };
static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 60, 12) };
static struct rt2880_pmx_func wled_grp[] = { FUNC("wled", 0, 72, 1) };
static struct rt2880_pmx_func pa_grp[] = { FUNC("pa", 0, 18, 4) };
static struct rt2880_pmx_func uartf_grp[] = {
FUNC("uartf", MT7620_GPIO_MODE_UARTF, 7, 8),
FUNC("pcm uartf", MT7620_GPIO_MODE_PCM_UARTF, 7, 8),
FUNC("pcm i2s", MT7620_GPIO_MODE_PCM_I2S, 7, 8),
FUNC("i2s uartf", MT7620_GPIO_MODE_I2S_UARTF, 7, 8),
FUNC("pcm gpio", MT7620_GPIO_MODE_PCM_GPIO, 11, 4),
FUNC("gpio uartf", MT7620_GPIO_MODE_GPIO_UARTF, 7, 4),
FUNC("gpio i2s", MT7620_GPIO_MODE_GPIO_I2S, 7, 4),
};
static struct rt2880_pmx_func wdt_grp[] = {
FUNC("wdt rst", 0, 17, 1),
FUNC("wdt refclk", 0, 17, 1),
};
static struct rt2880_pmx_func pcie_rst_grp[] = {
FUNC("pcie rst", MT7620_GPIO_MODE_PCIE_RST, 36, 1),
FUNC("pcie refclk", MT7620_GPIO_MODE_PCIE_REF, 36, 1)
};
static struct rt2880_pmx_func nd_sd_grp[] = {
FUNC("nand", MT7620_GPIO_MODE_NAND, 45, 15),
FUNC("sd", MT7620_GPIO_MODE_SD, 45, 15)
};
static struct rt2880_pmx_group mt7620a_pinmux_data[] = {
GRP("i2c", i2c_grp, 1, MT7620_GPIO_MODE_I2C),
GRP("uartf", uartf_grp, MT7620_GPIO_MODE_UART0_MASK,
MT7620_GPIO_MODE_UART0_SHIFT),
GRP("spi", spi_grp, 1, MT7620_GPIO_MODE_SPI),
GRP("uartlite", uartlite_grp, 1, MT7620_GPIO_MODE_UART1),
GRP_G("wdt", wdt_grp, MT7620_GPIO_MODE_WDT_MASK,
MT7620_GPIO_MODE_WDT_GPIO, MT7620_GPIO_MODE_WDT_SHIFT),
GRP_G("mdio", mdio_grp, MT7620_GPIO_MODE_MDIO_MASK,
MT7620_GPIO_MODE_MDIO_GPIO, MT7620_GPIO_MODE_MDIO_SHIFT),
GRP("rgmii1", rgmii1_grp, 1, MT7620_GPIO_MODE_RGMII1),
GRP("spi refclk", refclk_grp, 1, MT7620_GPIO_MODE_SPI_REF_CLK),
GRP_G("pcie", pcie_rst_grp, MT7620_GPIO_MODE_PCIE_MASK,
MT7620_GPIO_MODE_PCIE_GPIO, MT7620_GPIO_MODE_PCIE_SHIFT),
GRP_G("nd_sd", nd_sd_grp, MT7620_GPIO_MODE_ND_SD_MASK,
MT7620_GPIO_MODE_ND_SD_GPIO, MT7620_GPIO_MODE_ND_SD_SHIFT),
GRP("rgmii2", rgmii2_grp, 1, MT7620_GPIO_MODE_RGMII2),
GRP("wled", wled_grp, 1, MT7620_GPIO_MODE_WLED),
GRP("ephy", ephy_grp, 1, MT7620_GPIO_MODE_EPHY),
GRP("pa", pa_grp, 1, MT7620_GPIO_MODE_PA),
{ 0 }
};
static struct rt2880_pmx_func pwm1_grp_mt7628[] = {
FUNC("sdxc d6", 3, 19, 1),
FUNC("utif", 2, 19, 1),
FUNC("gpio", 1, 19, 1),
FUNC("pwm1", 0, 19, 1),
};
static struct rt2880_pmx_func pwm0_grp_mt7628[] = {
FUNC("sdxc d7", 3, 18, 1),
FUNC("utif", 2, 18, 1),
FUNC("gpio", 1, 18, 1),
FUNC("pwm0", 0, 18, 1),
};
static struct rt2880_pmx_func uart2_grp_mt7628[] = {
FUNC("sdxc d5 d4", 3, 20, 2),
FUNC("pwm", 2, 20, 2),
FUNC("gpio", 1, 20, 2),
FUNC("uart2", 0, 20, 2),
};
static struct rt2880_pmx_func uart1_grp_mt7628[] = {
FUNC("sw_r", 3, 45, 2),
FUNC("pwm", 2, 45, 2),
FUNC("gpio", 1, 45, 2),
FUNC("uart1", 0, 45, 2),
};
static struct rt2880_pmx_func i2c_grp_mt7628[] = {
FUNC("-", 3, 4, 2),
FUNC("debug", 2, 4, 2),
FUNC("gpio", 1, 4, 2),
FUNC("i2c", 0, 4, 2),
};
static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) };
static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) };
static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 38, 1) };
static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) };
static struct rt2880_pmx_func sd_mode_grp_mt7628[] = {
FUNC("jtag", 3, 22, 8),
FUNC("utif", 2, 22, 8),
FUNC("gpio", 1, 22, 8),
FUNC("sdxc", 0, 22, 8),
};
static struct rt2880_pmx_func uart0_grp_mt7628[] = {
FUNC("-", 3, 12, 2),
FUNC("-", 2, 12, 2),
FUNC("gpio", 1, 12, 2),
FUNC("uart0", 0, 12, 2),
};
static struct rt2880_pmx_func i2s_grp_mt7628[] = {
FUNC("antenna", 3, 0, 4),
FUNC("pcm", 2, 0, 4),
FUNC("gpio", 1, 0, 4),
FUNC("i2s", 0, 0, 4),
};
static struct rt2880_pmx_func spi_cs1_grp_mt7628[] = {
FUNC("-", 3, 6, 1),
FUNC("refclk", 2, 6, 1),
FUNC("gpio", 1, 6, 1),
FUNC("spi cs1", 0, 6, 1),
};
static struct rt2880_pmx_func spis_grp_mt7628[] = {
FUNC("pwm_uart2", 3, 14, 4),
FUNC("utif", 2, 14, 4),
FUNC("gpio", 1, 14, 4),
FUNC("spis", 0, 14, 4),
};
static struct rt2880_pmx_func gpio_grp_mt7628[] = {
FUNC("pcie", 3, 11, 1),
FUNC("refclk", 2, 11, 1),
FUNC("gpio", 1, 11, 1),
FUNC("gpio", 0, 11, 1),
};
static struct rt2880_pmx_func p4led_kn_grp_mt7628[] = {
FUNC("jtag", 3, 30, 1),
FUNC("utif", 2, 30, 1),
FUNC("gpio", 1, 30, 1),
FUNC("p4led_kn", 0, 30, 1),
};
static struct rt2880_pmx_func p3led_kn_grp_mt7628[] = {
FUNC("jtag", 3, 31, 1),
FUNC("utif", 2, 31, 1),
FUNC("gpio", 1, 31, 1),
FUNC("p3led_kn", 0, 31, 1),
};
static struct rt2880_pmx_func p2led_kn_grp_mt7628[] = {
FUNC("jtag", 3, 32, 1),
FUNC("utif", 2, 32, 1),
FUNC("gpio", 1, 32, 1),
FUNC("p2led_kn", 0, 32, 1),
};
static struct rt2880_pmx_func p1led_kn_grp_mt7628[] = {
FUNC("jtag", 3, 33, 1),
FUNC("utif", 2, 33, 1),
FUNC("gpio", 1, 33, 1),
FUNC("p1led_kn", 0, 33, 1),
};
static struct rt2880_pmx_func p0led_kn_grp_mt7628[] = {
FUNC("jtag", 3, 34, 1),
FUNC("rsvd", 2, 34, 1),
FUNC("gpio", 1, 34, 1),
FUNC("p0led_kn", 0, 34, 1),
};
static struct rt2880_pmx_func wled_kn_grp_mt7628[] = {
FUNC("rsvd", 3, 35, 1),
FUNC("rsvd", 2, 35, 1),
FUNC("gpio", 1, 35, 1),
FUNC("wled_kn", 0, 35, 1),
};
static struct rt2880_pmx_func p4led_an_grp_mt7628[] = {
FUNC("jtag", 3, 39, 1),
FUNC("utif", 2, 39, 1),
FUNC("gpio", 1, 39, 1),
FUNC("p4led_an", 0, 39, 1),
};
static struct rt2880_pmx_func p3led_an_grp_mt7628[] = {
FUNC("jtag", 3, 40, 1),
FUNC("utif", 2, 40, 1),
FUNC("gpio", 1, 40, 1),
FUNC("p3led_an", 0, 40, 1),
};
static struct rt2880_pmx_func p2led_an_grp_mt7628[] = {
FUNC("jtag", 3, 41, 1),
FUNC("utif", 2, 41, 1),
FUNC("gpio", 1, 41, 1),
FUNC("p2led_an", 0, 41, 1),
};
static struct rt2880_pmx_func p1led_an_grp_mt7628[] = {
FUNC("jtag", 3, 42, 1),
FUNC("utif", 2, 42, 1),
FUNC("gpio", 1, 42, 1),
FUNC("p1led_an", 0, 42, 1),
};
static struct rt2880_pmx_func p0led_an_grp_mt7628[] = {
FUNC("jtag", 3, 43, 1),
FUNC("rsvd", 2, 43, 1),
FUNC("gpio", 1, 43, 1),
FUNC("p0led_an", 0, 43, 1),
};
static struct rt2880_pmx_func wled_an_grp_mt7628[] = {
FUNC("rsvd", 3, 44, 1),
FUNC("rsvd", 2, 44, 1),
FUNC("gpio", 1, 44, 1),
FUNC("wled_an", 0, 44, 1),
};
#define MT7628_GPIO_MODE_MASK 0x3
#define MT7628_GPIO_MODE_P4LED_KN 58
#define MT7628_GPIO_MODE_P3LED_KN 56
#define MT7628_GPIO_MODE_P2LED_KN 54
#define MT7628_GPIO_MODE_P1LED_KN 52
#define MT7628_GPIO_MODE_P0LED_KN 50
#define MT7628_GPIO_MODE_WLED_KN 48
#define MT7628_GPIO_MODE_P4LED_AN 42
#define MT7628_GPIO_MODE_P3LED_AN 40
#define MT7628_GPIO_MODE_P2LED_AN 38
#define MT7628_GPIO_MODE_P1LED_AN 36
#define MT7628_GPIO_MODE_P0LED_AN 34
#define MT7628_GPIO_MODE_WLED_AN 32
#define MT7628_GPIO_MODE_PWM1 30
#define MT7628_GPIO_MODE_PWM0 28
#define MT7628_GPIO_MODE_UART2 26
#define MT7628_GPIO_MODE_UART1 24
#define MT7628_GPIO_MODE_I2C 20
#define MT7628_GPIO_MODE_REFCLK 18
#define MT7628_GPIO_MODE_PERST 16
#define MT7628_GPIO_MODE_WDT 14
#define MT7628_GPIO_MODE_SPI 12
#define MT7628_GPIO_MODE_SDMODE 10
#define MT7628_GPIO_MODE_UART0 8
#define MT7628_GPIO_MODE_I2S 6
#define MT7628_GPIO_MODE_CS1 4
#define MT7628_GPIO_MODE_SPIS 2
#define MT7628_GPIO_MODE_GPIO 0
static struct rt2880_pmx_group mt7628an_pinmux_data[] = {
GRP_G("pwm1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_PWM1),
GRP_G("pwm0", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_PWM0),
GRP_G("uart2", uart2_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART2),
GRP_G("uart1", uart1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART1),
GRP_G("i2c", i2c_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_I2C),
GRP("refclk", refclk_grp_mt7628, 1, MT7628_GPIO_MODE_REFCLK),
GRP("perst", perst_grp_mt7628, 1, MT7628_GPIO_MODE_PERST),
GRP("wdt", wdt_grp_mt7628, 1, MT7628_GPIO_MODE_WDT),
GRP("spi", spi_grp_mt7628, 1, MT7628_GPIO_MODE_SPI),
GRP_G("sdmode", sd_mode_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_SDMODE),
GRP_G("uart0", uart0_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART0),
GRP_G("i2s", i2s_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_I2S),
GRP_G("spi cs1", spi_cs1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_CS1),
GRP_G("spis", spis_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_SPIS),
GRP_G("gpio", gpio_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_GPIO),
GRP_G("wled_an", wled_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_WLED_AN),
GRP_G("p0led_an", p0led_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P0LED_AN),
GRP_G("p1led_an", p1led_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P1LED_AN),
GRP_G("p2led_an", p2led_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P2LED_AN),
GRP_G("p3led_an", p3led_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P3LED_AN),
GRP_G("p4led_an", p4led_an_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P4LED_AN),
GRP_G("wled_kn", wled_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_WLED_KN),
GRP_G("p0led_kn", p0led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P0LED_KN),
GRP_G("p1led_kn", p1led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P1LED_KN),
GRP_G("p2led_kn", p2led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P2LED_KN),
GRP_G("p3led_kn", p3led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P3LED_KN),
GRP_G("p4led_kn", p4led_kn_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_P4LED_KN),
{ 0 }
};
static inline int is_mt76x8(void)
{
return ralink_soc == MT762X_SOC_MT7628AN ||
ralink_soc == MT762X_SOC_MT7688;
}
static __init u32
mt7620_calc_rate(u32 ref_rate, u32 mul, u32 div)
{
u64 t;
t = ref_rate;
t *= mul;
do_div(t, div);
return t;
}
#define MHZ(x) ((x) * 1000 * 1000)
static __init unsigned long
mt7620_get_xtal_rate(void)
{
u32 reg;
reg = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG0);
if (reg & SYSCFG0_XTAL_FREQ_SEL)
return MHZ(40);
return MHZ(20);
}
static __init unsigned long
mt7620_get_periph_rate(unsigned long xtal_rate)
{
u32 reg;
reg = rt_sysc_r32(SYSC_REG_CLKCFG0);
if (reg & CLKCFG0_PERI_CLK_SEL)
return xtal_rate;
return MHZ(40);
}
static const u32 mt7620_clk_divider[] __initconst = { 2, 3, 4, 8 };
static __init unsigned long
mt7620_get_cpu_pll_rate(unsigned long xtal_rate)
{
u32 reg;
u32 mul;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG0);
if (reg & CPLL_CFG0_BYPASS_REF_CLK)
return xtal_rate;
if ((reg & CPLL_CFG0_SW_CFG) == 0)
return MHZ(600);
mul = (reg >> CPLL_CFG0_PLL_MULT_RATIO_SHIFT) &
CPLL_CFG0_PLL_MULT_RATIO_MASK;
mul += 24;
if (reg & CPLL_CFG0_LC_CURFCK)
mul *= 2;
div = (reg >> CPLL_CFG0_PLL_DIV_RATIO_SHIFT) &
CPLL_CFG0_PLL_DIV_RATIO_MASK;
WARN_ON(div >= ARRAY_SIZE(mt7620_clk_divider));
return mt7620_calc_rate(xtal_rate, mul, mt7620_clk_divider[div]);
}
static __init unsigned long
mt7620_get_pll_rate(unsigned long xtal_rate, unsigned long cpu_pll_rate)
{
u32 reg;
reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG1);
if (reg & CPLL_CFG1_CPU_AUX1)
return xtal_rate;
if (reg & CPLL_CFG1_CPU_AUX0)
return MHZ(480);
return cpu_pll_rate;
}
static __init unsigned long
mt7620_get_cpu_rate(unsigned long pll_rate)
{
u32 reg;
u32 mul;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
mul = reg & CPU_SYS_CLKCFG_CPU_FFRAC_MASK;
div = (reg >> CPU_SYS_CLKCFG_CPU_FDIV_SHIFT) &
CPU_SYS_CLKCFG_CPU_FDIV_MASK;
return mt7620_calc_rate(pll_rate, mul, div);
}
static const u32 mt7620_ocp_dividers[16] __initconst = {
[CPU_SYS_CLKCFG_OCP_RATIO_2] = 2,
[CPU_SYS_CLKCFG_OCP_RATIO_3] = 3,
[CPU_SYS_CLKCFG_OCP_RATIO_4] = 4,
[CPU_SYS_CLKCFG_OCP_RATIO_5] = 5,
[CPU_SYS_CLKCFG_OCP_RATIO_10] = 10,
};
static __init unsigned long
mt7620_get_dram_rate(unsigned long pll_rate)
{
if (dram_type == SYSCFG0_DRAM_TYPE_SDRAM)
return pll_rate / 4;
return pll_rate / 3;
}
static __init unsigned long
mt7620_get_sys_rate(unsigned long cpu_rate)
{
u32 reg;
u32 ocp_ratio;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
ocp_ratio = (reg >> CPU_SYS_CLKCFG_OCP_RATIO_SHIFT) &
CPU_SYS_CLKCFG_OCP_RATIO_MASK;
if (WARN_ON(ocp_ratio >= ARRAY_SIZE(mt7620_ocp_dividers)))
return cpu_rate;
div = mt7620_ocp_dividers[ocp_ratio];
if (WARN(!div, "invalid divider for OCP ratio %u", ocp_ratio))
return cpu_rate;
return cpu_rate / div;
}
void __init ralink_clk_init(void)
{
unsigned long xtal_rate;
unsigned long cpu_pll_rate;
unsigned long pll_rate;
unsigned long cpu_rate;
unsigned long sys_rate;
unsigned long dram_rate;
unsigned long periph_rate;
unsigned long pcmi2s_rate;
xtal_rate = mt7620_get_xtal_rate();
#define RFMT(label) label ":%lu.%03luMHz "
#define RINT(x) ((x) / 1000000)
#define RFRAC(x) (((x) / 1000) % 1000)
if (is_mt76x8()) {
if (xtal_rate == MHZ(40))
cpu_rate = MHZ(580);
else
cpu_rate = MHZ(575);
dram_rate = sys_rate = cpu_rate / 3;
periph_rate = MHZ(40);
pcmi2s_rate = MHZ(480);
ralink_clk_add("10000d00.uartlite", periph_rate);
ralink_clk_add("10000e00.uartlite", periph_rate);
} else {
cpu_pll_rate = mt7620_get_cpu_pll_rate(xtal_rate);
pll_rate = mt7620_get_pll_rate(xtal_rate, cpu_pll_rate);
cpu_rate = mt7620_get_cpu_rate(pll_rate);
dram_rate = mt7620_get_dram_rate(pll_rate);
sys_rate = mt7620_get_sys_rate(cpu_rate);
periph_rate = mt7620_get_periph_rate(xtal_rate);
pcmi2s_rate = periph_rate;
pr_debug(RFMT("XTAL") RFMT("CPU_PLL") RFMT("PLL"),
RINT(xtal_rate), RFRAC(xtal_rate),
RINT(cpu_pll_rate), RFRAC(cpu_pll_rate),
RINT(pll_rate), RFRAC(pll_rate));
ralink_clk_add("10000500.uart", periph_rate);
}
pr_debug(RFMT("CPU") RFMT("DRAM") RFMT("SYS") RFMT("PERIPH"),
RINT(cpu_rate), RFRAC(cpu_rate),
RINT(dram_rate), RFRAC(dram_rate),
RINT(sys_rate), RFRAC(sys_rate),
RINT(periph_rate), RFRAC(periph_rate));
#undef RFRAC
#undef RINT
#undef RFMT
ralink_clk_add("cpu", cpu_rate);
ralink_clk_add("10000100.timer", periph_rate);
ralink_clk_add("10000120.watchdog", periph_rate);
ralink_clk_add("10000900.i2c", periph_rate);
ralink_clk_add("10000a00.i2s", pcmi2s_rate);
ralink_clk_add("10000b00.spi", sys_rate);
ralink_clk_add("10000b40.spi", sys_rate);
ralink_clk_add("10000c00.uartlite", periph_rate);
ralink_clk_add("10000d00.uart1", periph_rate);
ralink_clk_add("10000e00.uart2", periph_rate);
ralink_clk_add("10180000.wmac", xtal_rate);
if (IS_ENABLED(CONFIG_USB) && !is_mt76x8()) {
/*
* When the CPU goes into sleep mode, the BUS clock will be
* too low for USB to function properly. Adjust the busses
* fractional divider to fix this
*/
u32 val = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
val &= ~(CLKCFG_FDIV_MASK | CLKCFG_FFRAC_MASK);
val |= CLKCFG_FDIV_USB_VAL | CLKCFG_FFRAC_USB_VAL;
rt_sysc_w32(val, SYSC_REG_CPU_SYS_CLKCFG);
}
}
void __init ralink_of_remap(void)
{
rt_sysc_membase = plat_of_remap_node("ralink,mt7620a-sysc");
rt_memc_membase = plat_of_remap_node("ralink,mt7620a-memc");
if (!rt_sysc_membase || !rt_memc_membase)
panic("Failed to remap core resources");
}
static __init void
mt7620_dram_init(struct ralink_soc_info *soc_info)
{
switch (dram_type) {
case SYSCFG0_DRAM_TYPE_SDRAM:
pr_info("Board has SDRAM\n");
soc_info->mem_size_min = MT7620_SDRAM_SIZE_MIN;
soc_info->mem_size_max = MT7620_SDRAM_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR1:
pr_info("Board has DDR1\n");
soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR2:
pr_info("Board has DDR2\n");
soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
break;
default:
BUG();
}
}
static __init void
mt7628_dram_init(struct ralink_soc_info *soc_info)
{
switch (dram_type) {
case SYSCFG0_DRAM_TYPE_DDR1_MT7628:
pr_info("Board has DDR1\n");
soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR2_MT7628:
pr_info("Board has DDR2\n");
soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
break;
default:
BUG();
}
}
void prom_soc_init(struct ralink_soc_info *soc_info)
{
void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7620_SYSC_BASE);
unsigned char *name = NULL;
u32 n0;
u32 n1;
u32 rev;
u32 cfg0;
u32 pmu0;
u32 pmu1;
u32 bga;
n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
bga = (rev >> CHIP_REV_PKG_SHIFT) & CHIP_REV_PKG_MASK;
if (n0 == MT7620_CHIP_NAME0 && n1 == MT7620_CHIP_NAME1) {
if (bga) {
ralink_soc = MT762X_SOC_MT7620A;
name = "MT7620A";
soc_info->compatible = "ralink,mt7620a-soc";
} else {
ralink_soc = MT762X_SOC_MT7620N;
name = "MT7620N";
soc_info->compatible = "ralink,mt7620n-soc";
}
} else if (n0 == MT7620_CHIP_NAME0 && n1 == MT7628_CHIP_NAME1) {
u32 efuse = __raw_readl(sysc + SYSC_REG_EFUSE_CFG);
if (efuse & EFUSE_MT7688) {
ralink_soc = MT762X_SOC_MT7688;
name = "MT7688";
} else {
ralink_soc = MT762X_SOC_MT7628AN;
name = "MT7628AN";
}
soc_info->compatible = "ralink,mt7628an-soc";
} else {
panic("mt762x: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
}
snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
"MediaTek %s ver:%u eco:%u",
name,
(rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
(rev & CHIP_REV_ECO_MASK));
cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
if (is_mt76x8()) {
dram_type = cfg0 & DRAM_TYPE_MT7628_MASK;
} else {
dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) &
SYSCFG0_DRAM_TYPE_MASK;
if (dram_type == SYSCFG0_DRAM_TYPE_UNKNOWN)
dram_type = SYSCFG0_DRAM_TYPE_SDRAM;
}
soc_info->mem_base = MT7620_DRAM_BASE;
if (is_mt76x8())
mt7628_dram_init(soc_info);
else
mt7620_dram_init(soc_info);
pmu0 = __raw_readl(sysc + PMU0_CFG);
pmu1 = __raw_readl(sysc + PMU1_CFG);
pr_info("Analog PMU set to %s control\n",
(pmu0 & PMU_SW_SET) ? ("sw") : ("hw"));
pr_info("Digital PMU set to %s control\n",
(pmu1 & DIG_SW_SEL) ? ("sw") : ("hw"));
if (is_mt76x8())
rt2880_pinmux_data = mt7628an_pinmux_data;
else
rt2880_pinmux_data = mt7620a_pinmux_data;
}
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