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linux-stable/drivers/clk/imx/clk-imx7ulp.c
Jacky Bai 9179d23919 clk: imx: Update the pfdv2 for 8ulp specific support 
On i.MX8ULP, the 'CLK_SET_RATE_PARENT' flag should NOT be
set and according to the laest RM, the PFD divider value range
seems will be changed in the future, so update the pfdv2 to
include the specific support for i.MX8ULP.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20210914065208.3582128-8-ping.bai@nxp.com
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
2021-09-30 16:22:56 +03:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* Copyright 2017~2018 NXP
*
* Author: Dong Aisheng <aisheng.dong@nxp.com>
*
*/
#include <dt-bindings/clock/imx7ulp-clock.h>
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "clk.h"
static const char * const pll_pre_sels[] = { "sosc", "firc", };
static const char * const spll_pfd_sels[] = { "spll_pfd0", "spll_pfd1", "spll_pfd2", "spll_pfd3", };
static const char * const spll_sels[] = { "spll", "spll_pfd_sel", };
static const char * const apll_pfd_sels[] = { "apll_pfd0", "apll_pfd1", "apll_pfd2", "apll_pfd3", };
static const char * const apll_sels[] = { "apll", "apll_pfd_sel", };
static const char * const scs_sels[] = { "dummy", "sosc", "sirc", "firc", "dummy", "apll_sel", "spll_sel", "dummy", };
static const char * const ddr_sels[] = { "apll_pfd_sel", "dummy", "dummy", "dummy", };
static const char * const nic_sels[] = { "firc", "ddr_clk", };
static const char * const periph_plat_sels[] = { "dummy", "nic1_bus_clk", "nic1_clk", "ddr_clk", "apll_pfd2", "apll_pfd1", "apll_pfd0", "upll", };
static const char * const periph_bus_sels[] = { "dummy", "sosc_bus_clk", "dummy", "firc_bus_clk", "rosc", "nic1_bus_clk", "nic1_clk", "spll_bus_clk", };
static const char * const arm_sels[] = { "core", "dummy", "dummy", "hsrun_core", };
/* used by sosc/sirc/firc/ddr/spll/apll dividers */
static const struct clk_div_table ulp_div_table[] = {
{ .val = 1, .div = 1, },
{ .val = 2, .div = 2, },
{ .val = 3, .div = 4, },
{ .val = 4, .div = 8, },
{ .val = 5, .div = 16, },
{ .val = 6, .div = 32, },
{ .val = 7, .div = 64, },
{ /* sentinel */ },
};
static void __init imx7ulp_clk_scg1_init(struct device_node *np)
{
struct clk_hw_onecell_data *clk_data;
struct clk_hw **hws;
void __iomem *base;
clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_SCG1_END),
GFP_KERNEL);
if (!clk_data)
return;
clk_data->num = IMX7ULP_CLK_SCG1_END;
hws = clk_data->hws;
hws[IMX7ULP_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0);
hws[IMX7ULP_CLK_ROSC] = imx_obtain_fixed_clk_hw(np, "rosc");
hws[IMX7ULP_CLK_SOSC] = imx_obtain_fixed_clk_hw(np, "sosc");
hws[IMX7ULP_CLK_SIRC] = imx_obtain_fixed_clk_hw(np, "sirc");
hws[IMX7ULP_CLK_FIRC] = imx_obtain_fixed_clk_hw(np, "firc");
hws[IMX7ULP_CLK_UPLL] = imx_obtain_fixed_clk_hw(np, "upll");
/* SCG1 */
base = of_iomap(np, 0);
WARN_ON(!base);
/* NOTE: xPLL config can't be changed when xPLL is enabled */
hws[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_hw_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE);
hws[IMX7ULP_CLK_SPLL_PRE_SEL] = imx_clk_hw_mux_flags("spll_pre_sel", base + 0x608, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE);
/* name parent_name reg shift width flags */
hws[IMX7ULP_CLK_APLL_PRE_DIV] = imx_clk_hw_divider_flags("apll_pre_div", "apll_pre_sel", base + 0x508, 8, 3, CLK_SET_RATE_GATE);
hws[IMX7ULP_CLK_SPLL_PRE_DIV] = imx_clk_hw_divider_flags("spll_pre_div", "spll_pre_sel", base + 0x608, 8, 3, CLK_SET_RATE_GATE);
/* name parent_name base */
hws[IMX7ULP_CLK_APLL] = imx_clk_hw_pllv4(IMX_PLLV4_IMX7ULP, "apll", "apll_pre_div", base + 0x500);
hws[IMX7ULP_CLK_SPLL] = imx_clk_hw_pllv4(IMX_PLLV4_IMX7ULP, "spll", "spll_pre_div", base + 0x600);
/* APLL PFDs */
hws[IMX7ULP_CLK_APLL_PFD0] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "apll_pfd0", "apll", base + 0x50c, 0);
hws[IMX7ULP_CLK_APLL_PFD1] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "apll_pfd1", "apll", base + 0x50c, 1);
hws[IMX7ULP_CLK_APLL_PFD2] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "apll_pfd2", "apll", base + 0x50c, 2);
hws[IMX7ULP_CLK_APLL_PFD3] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "apll_pfd3", "apll", base + 0x50c, 3);
/* SPLL PFDs */
hws[IMX7ULP_CLK_SPLL_PFD0] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "spll_pfd0", "spll", base + 0x60C, 0);
hws[IMX7ULP_CLK_SPLL_PFD1] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "spll_pfd1", "spll", base + 0x60C, 1);
hws[IMX7ULP_CLK_SPLL_PFD2] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "spll_pfd2", "spll", base + 0x60C, 2);
hws[IMX7ULP_CLK_SPLL_PFD3] = imx_clk_hw_pfdv2(IMX_PFDV2_IMX7ULP, "spll_pfd3", "spll", base + 0x60C, 3);
/* PLL Mux */
hws[IMX7ULP_CLK_APLL_PFD_SEL] = imx_clk_hw_mux_flags("apll_pfd_sel", base + 0x508, 14, 2, apll_pfd_sels, ARRAY_SIZE(apll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
hws[IMX7ULP_CLK_SPLL_PFD_SEL] = imx_clk_hw_mux_flags("spll_pfd_sel", base + 0x608, 14, 2, spll_pfd_sels, ARRAY_SIZE(spll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
hws[IMX7ULP_CLK_APLL_SEL] = imx_clk_hw_mux_flags("apll_sel", base + 0x508, 1, 1, apll_sels, ARRAY_SIZE(apll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
hws[IMX7ULP_CLK_SPLL_SEL] = imx_clk_hw_mux_flags("spll_sel", base + 0x608, 1, 1, spll_sels, ARRAY_SIZE(spll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
hws[IMX7ULP_CLK_SPLL_BUS_CLK] = imx_clk_hw_divider_gate("spll_bus_clk", "spll_sel", CLK_SET_RATE_GATE, base + 0x604, 8, 3, 0, ulp_div_table, &imx_ccm_lock);
/* scs/ddr/nic select different clock source requires that clock to be enabled first */
hws[IMX7ULP_CLK_SYS_SEL] = imx_clk_hw_mux2("scs_sel", base + 0x14, 24, 4, scs_sels, ARRAY_SIZE(scs_sels));
hws[IMX7ULP_CLK_HSRUN_SYS_SEL] = imx_clk_hw_mux2("hsrun_scs_sel", base + 0x1c, 24, 4, scs_sels, ARRAY_SIZE(scs_sels));
hws[IMX7ULP_CLK_NIC_SEL] = imx_clk_hw_mux2("nic_sel", base + 0x40, 28, 1, nic_sels, ARRAY_SIZE(nic_sels));
hws[IMX7ULP_CLK_DDR_SEL] = imx_clk_hw_mux_flags("ddr_sel", base + 0x30, 24, 2, ddr_sels, ARRAY_SIZE(ddr_sels), CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE);
hws[IMX7ULP_CLK_CORE_DIV] = imx_clk_hw_divider_flags("divcore", "scs_sel", base + 0x14, 16, 4, CLK_SET_RATE_PARENT);
hws[IMX7ULP_CLK_CORE] = imx_clk_hw_cpu("core", "divcore", hws[IMX7ULP_CLK_CORE_DIV]->clk, hws[IMX7ULP_CLK_SYS_SEL]->clk, hws[IMX7ULP_CLK_SPLL_SEL]->clk, hws[IMX7ULP_CLK_FIRC]->clk);
hws[IMX7ULP_CLK_HSRUN_CORE_DIV] = imx_clk_hw_divider_flags("hsrun_divcore", "hsrun_scs_sel", base + 0x1c, 16, 4, CLK_SET_RATE_PARENT);
hws[IMX7ULP_CLK_HSRUN_CORE] = imx_clk_hw_cpu("hsrun_core", "hsrun_divcore", hws[IMX7ULP_CLK_HSRUN_CORE_DIV]->clk, hws[IMX7ULP_CLK_HSRUN_SYS_SEL]->clk, hws[IMX7ULP_CLK_SPLL_SEL]->clk, hws[IMX7ULP_CLK_FIRC]->clk);
hws[IMX7ULP_CLK_DDR_DIV] = imx_clk_hw_divider_gate("ddr_clk", "ddr_sel", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, base + 0x30, 0, 3,
0, ulp_div_table, &imx_ccm_lock);
hws[IMX7ULP_CLK_NIC0_DIV] = imx_clk_hw_divider_flags("nic0_clk", "nic_sel", base + 0x40, 24, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
hws[IMX7ULP_CLK_NIC1_DIV] = imx_clk_hw_divider_flags("nic1_clk", "nic0_clk", base + 0x40, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
hws[IMX7ULP_CLK_NIC1_BUS_DIV] = imx_clk_hw_divider_flags("nic1_bus_clk", "nic0_clk", base + 0x40, 4, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
hws[IMX7ULP_CLK_GPU_DIV] = imx_clk_hw_divider("gpu_clk", "nic0_clk", base + 0x40, 20, 4);
hws[IMX7ULP_CLK_SOSC_BUS_CLK] = imx_clk_hw_divider_gate("sosc_bus_clk", "sosc", 0, base + 0x104, 8, 3,
CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock);
hws[IMX7ULP_CLK_FIRC_BUS_CLK] = imx_clk_hw_divider_gate("firc_bus_clk", "firc", 0, base + 0x304, 8, 3,
CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock);
imx_check_clk_hws(hws, clk_data->num);
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
}
CLK_OF_DECLARE(imx7ulp_clk_scg1, "fsl,imx7ulp-scg1", imx7ulp_clk_scg1_init);
static void __init imx7ulp_clk_pcc2_init(struct device_node *np)
{
struct clk_hw_onecell_data *clk_data;
struct clk_hw **hws;
void __iomem *base;
clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_PCC2_END),
GFP_KERNEL);
if (!clk_data)
return;
clk_data->num = IMX7ULP_CLK_PCC2_END;
hws = clk_data->hws;
/* PCC2 */
base = of_iomap(np, 0);
WARN_ON(!base);
hws[IMX7ULP_CLK_DMA1] = imx_clk_hw_gate("dma1", "nic1_clk", base + 0x20, 30);
hws[IMX7ULP_CLK_RGPIO2P1] = imx_clk_hw_gate("rgpio2p1", "nic1_bus_clk", base + 0x3c, 30);
hws[IMX7ULP_CLK_DMA_MUX1] = imx_clk_hw_gate("dma_mux1", "nic1_bus_clk", base + 0x84, 30);
hws[IMX7ULP_CLK_CAAM] = imx_clk_hw_gate("caam", "nic1_clk", base + 0x90, 30);
hws[IMX7ULP_CLK_LPTPM4] = imx7ulp_clk_hw_composite("lptpm4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94);
hws[IMX7ULP_CLK_LPTPM5] = imx7ulp_clk_hw_composite("lptpm5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98);
hws[IMX7ULP_CLK_LPIT1] = imx7ulp_clk_hw_composite("lpit1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c);
hws[IMX7ULP_CLK_LPSPI2] = imx7ulp_clk_hw_composite("lpspi2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa4);
hws[IMX7ULP_CLK_LPSPI3] = imx7ulp_clk_hw_composite("lpspi3", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa8);
hws[IMX7ULP_CLK_LPI2C4] = imx7ulp_clk_hw_composite("lpi2c4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xac);
hws[IMX7ULP_CLK_LPI2C5] = imx7ulp_clk_hw_composite("lpi2c5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb0);
hws[IMX7ULP_CLK_LPUART4] = imx7ulp_clk_hw_composite("lpuart4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb4);
hws[IMX7ULP_CLK_LPUART5] = imx7ulp_clk_hw_composite("lpuart5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb8);
hws[IMX7ULP_CLK_FLEXIO1] = imx7ulp_clk_hw_composite("flexio1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xc4);
hws[IMX7ULP_CLK_USB0] = imx7ulp_clk_hw_composite("usb0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xcc);
hws[IMX7ULP_CLK_USB1] = imx7ulp_clk_hw_composite("usb1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xd0);
hws[IMX7ULP_CLK_USB_PHY] = imx_clk_hw_gate("usb_phy", "nic1_bus_clk", base + 0xd4, 30);
hws[IMX7ULP_CLK_USDHC0] = imx7ulp_clk_hw_composite("usdhc0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xdc);
hws[IMX7ULP_CLK_USDHC1] = imx7ulp_clk_hw_composite("usdhc1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xe0);
hws[IMX7ULP_CLK_WDG1] = imx7ulp_clk_hw_composite("wdg1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xf4);
hws[IMX7ULP_CLK_WDG2] = imx7ulp_clk_hw_composite("wdg2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0x10c);
imx_check_clk_hws(hws, clk_data->num);
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
imx_register_uart_clocks(2);
}
CLK_OF_DECLARE(imx7ulp_clk_pcc2, "fsl,imx7ulp-pcc2", imx7ulp_clk_pcc2_init);
static void __init imx7ulp_clk_pcc3_init(struct device_node *np)
{
struct clk_hw_onecell_data *clk_data;
struct clk_hw **hws;
void __iomem *base;
clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_PCC3_END),
GFP_KERNEL);
if (!clk_data)
return;
clk_data->num = IMX7ULP_CLK_PCC3_END;
hws = clk_data->hws;
/* PCC3 */
base = of_iomap(np, 0);
WARN_ON(!base);
hws[IMX7ULP_CLK_LPTPM6] = imx7ulp_clk_hw_composite("lptpm6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x84);
hws[IMX7ULP_CLK_LPTPM7] = imx7ulp_clk_hw_composite("lptpm7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x88);
hws[IMX7ULP_CLK_MMDC] = clk_hw_register_gate(NULL, "mmdc", "nic1_clk", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
base + 0xac, 30, 0, &imx_ccm_lock);
hws[IMX7ULP_CLK_LPI2C6] = imx7ulp_clk_hw_composite("lpi2c6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x90);
hws[IMX7ULP_CLK_LPI2C7] = imx7ulp_clk_hw_composite("lpi2c7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94);
hws[IMX7ULP_CLK_LPUART6] = imx7ulp_clk_hw_composite("lpuart6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98);
hws[IMX7ULP_CLK_LPUART7] = imx7ulp_clk_hw_composite("lpuart7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c);
hws[IMX7ULP_CLK_DSI] = imx7ulp_clk_hw_composite("dsi", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xa4);
hws[IMX7ULP_CLK_LCDIF] = imx7ulp_clk_hw_composite("lcdif", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xa8);
hws[IMX7ULP_CLK_VIU] = imx_clk_hw_gate("viu", "nic1_clk", base + 0xa0, 30);
hws[IMX7ULP_CLK_PCTLC] = imx_clk_hw_gate("pctlc", "nic1_bus_clk", base + 0xb8, 30);
hws[IMX7ULP_CLK_PCTLD] = imx_clk_hw_gate("pctld", "nic1_bus_clk", base + 0xbc, 30);
hws[IMX7ULP_CLK_PCTLE] = imx_clk_hw_gate("pctle", "nic1_bus_clk", base + 0xc0, 30);
hws[IMX7ULP_CLK_PCTLF] = imx_clk_hw_gate("pctlf", "nic1_bus_clk", base + 0xc4, 30);
hws[IMX7ULP_CLK_GPU3D] = imx7ulp_clk_hw_composite("gpu3d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x140);
hws[IMX7ULP_CLK_GPU2D] = imx7ulp_clk_hw_composite("gpu2d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x144);
imx_check_clk_hws(hws, clk_data->num);
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
imx_register_uart_clocks(7);
}
CLK_OF_DECLARE(imx7ulp_clk_pcc3, "fsl,imx7ulp-pcc3", imx7ulp_clk_pcc3_init);
static void __init imx7ulp_clk_smc1_init(struct device_node *np)
{
struct clk_hw_onecell_data *clk_data;
struct clk_hw **hws;
void __iomem *base;
clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_SMC1_END),
GFP_KERNEL);
if (!clk_data)
return;
clk_data->num = IMX7ULP_CLK_SMC1_END;
hws = clk_data->hws;
/* SMC1 */
base = of_iomap(np, 0);
WARN_ON(!base);
hws[IMX7ULP_CLK_ARM] = imx_clk_hw_mux_flags("arm", base + 0x10, 8, 2, arm_sels, ARRAY_SIZE(arm_sels), CLK_SET_RATE_PARENT);
imx_check_clk_hws(hws, clk_data->num);
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
}
CLK_OF_DECLARE(imx7ulp_clk_smc1, "fsl,imx7ulp-smc1", imx7ulp_clk_smc1_init);
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