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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 DENX Software Engineering
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*/
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <dt-bindings/clock/imx6qdl-clock.h>
#include "clk.h"
static int imx6q_check_id(ulong id)
{
if (id < IMX6QDL_CLK_DUMMY || id >= IMX6QDL_CLK_END) {
printf("%s: Invalid clk ID #%lu\n", __func__, id);
return -EINVAL;
}
return 0;
}
static ulong imx6q_clk_get_rate(struct clk *clk)
{
struct clk *c;
int ret;
debug("%s(#%lu)\n", __func__, clk->id);
ret = imx6q_check_id(clk->id);
if (ret)
return ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
return clk_get_rate(c);
}
static ulong imx6q_clk_set_rate(struct clk *clk, unsigned long rate)
{
debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
return rate;
}
static int __imx6q_clk_enable(struct clk *clk, bool enable)
{
struct clk *c;
int ret = 0;
debug("%s(#%lu) en: %d\n", __func__, clk->id, enable);
ret = imx6q_check_id(clk->id);
if (ret)
return ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
if (enable)
ret = clk_enable(c);
else
ret = clk_disable(c);
return ret;
}
static int imx6q_clk_disable(struct clk *clk)
{
return __imx6q_clk_enable(clk, 0);
}
static int imx6q_clk_enable(struct clk *clk)
{
return __imx6q_clk_enable(clk, 1);
}
static struct clk_ops imx6q_clk_ops = {
.set_rate = imx6q_clk_set_rate,
.get_rate = imx6q_clk_get_rate,
.enable = imx6q_clk_enable,
.disable = imx6q_clk_disable,
};
static const char *const usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", };
static const char *const periph_sels[] = { "periph_pre", "periph_clk2", };
static const char *const periph_pre_sels[] = { "pll2_bus", "pll2_pfd2_396m",
"pll2_pfd0_352m", "pll2_198m", };
static int imx6q_clk_probe(struct udevice *dev)
{
void *base;
/* Anatop clocks */
base = (void *)ANATOP_BASE_ADDR;
clk_dm(IMX6QDL_CLK_PLL2,
imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_bus", "osc",
base + 0x30, 0x1));
clk_dm(IMX6QDL_CLK_PLL3_USB_OTG,
imx_clk_pllv3(IMX_PLLV3_USB, "pll3_usb_otg", "osc",
base + 0x10, 0x3));
clk_dm(IMX6QDL_CLK_PLL3_60M,
imx_clk_fixed_factor("pll3_60m", "pll3_usb_otg", 1, 8));
clk_dm(IMX6QDL_CLK_PLL2_PFD0_352M,
imx_clk_pfd("pll2_pfd0_352m", "pll2_bus", base + 0x100, 0));
clk_dm(IMX6QDL_CLK_PLL2_PFD2_396M,
imx_clk_pfd("pll2_pfd2_396m", "pll2_bus", base + 0x100, 2));
/* CCM clocks */
base = dev_read_addr_ptr(dev);
if (!base)
return -EINVAL;
clk_dm(IMX6QDL_CLK_USDHC1_SEL,
imx_clk_mux("usdhc1_sel", base + 0x1c, 16, 1,
usdhc_sels, ARRAY_SIZE(usdhc_sels)));
clk_dm(IMX6QDL_CLK_USDHC2_SEL,
imx_clk_mux("usdhc2_sel", base + 0x1c, 17, 1,
usdhc_sels, ARRAY_SIZE(usdhc_sels)));
clk_dm(IMX6QDL_CLK_USDHC3_SEL,
imx_clk_mux("usdhc3_sel", base + 0x1c, 18, 1,
usdhc_sels, ARRAY_SIZE(usdhc_sels)));
clk_dm(IMX6QDL_CLK_USDHC4_SEL,
imx_clk_mux("usdhc4_sel", base + 0x1c, 19, 1,
usdhc_sels, ARRAY_SIZE(usdhc_sels)));
clk_dm(IMX6QDL_CLK_USDHC1_PODF,
imx_clk_divider("usdhc1_podf", "usdhc1_sel",
base + 0x24, 11, 3));
clk_dm(IMX6QDL_CLK_USDHC2_PODF,
imx_clk_divider("usdhc2_podf", "usdhc2_sel",
base + 0x24, 16, 3));
clk_dm(IMX6QDL_CLK_USDHC3_PODF,
imx_clk_divider("usdhc3_podf", "usdhc3_sel",
base + 0x24, 19, 3));
clk_dm(IMX6QDL_CLK_USDHC4_PODF,
imx_clk_divider("usdhc4_podf", "usdhc4_sel",
base + 0x24, 22, 3));
clk_dm(IMX6QDL_CLK_ECSPI_ROOT,
imx_clk_divider("ecspi_root", "pll3_60m", base + 0x38, 19, 6));
clk_dm(IMX6QDL_CLK_ECSPI1,
imx_clk_gate2("ecspi1", "ecspi_root", base + 0x6c, 0));
clk_dm(IMX6QDL_CLK_ECSPI2,
imx_clk_gate2("ecspi2", "ecspi_root", base + 0x6c, 2));
clk_dm(IMX6QDL_CLK_ECSPI3,
imx_clk_gate2("ecspi3", "ecspi_root", base + 0x6c, 4));
clk_dm(IMX6QDL_CLK_ECSPI4,
imx_clk_gate2("ecspi4", "ecspi_root", base + 0x6c, 6));
clk_dm(IMX6QDL_CLK_USDHC1,
imx_clk_gate2("usdhc1", "usdhc1_podf", base + 0x80, 2));
clk_dm(IMX6QDL_CLK_USDHC2,
imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4));
clk_dm(IMX6QDL_CLK_USDHC3,
imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6));
clk_dm(IMX6QDL_CLK_USDHC4,
imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8));
clk_dm(IMX6QDL_CLK_PERIPH_PRE,
imx_clk_mux("periph_pre", base + 0x18, 18, 2, periph_pre_sels,
ARRAY_SIZE(periph_pre_sels)));
clk_dm(IMX6QDL_CLK_PERIPH,
imx_clk_busy_mux("periph", base + 0x14, 25, 1, base + 0x48,
5, periph_sels, ARRAY_SIZE(periph_sels)));
clk_dm(IMX6QDL_CLK_AHB,
imx_clk_busy_divider("ahb", "periph", base + 0x14, 10, 3,
base + 0x48, 1));
clk_dm(IMX6QDL_CLK_IPG,
imx_clk_divider("ipg", "ahb", base + 0x14, 8, 2));
clk_dm(IMX6QDL_CLK_IPG_PER,
imx_clk_divider("ipg_per", "ipg", base + 0x1c, 0, 6));
clk_dm(IMX6QDL_CLK_I2C1,
imx_clk_gate2("i2c1", "ipg_per", base + 0x70, 6));
clk_dm(IMX6QDL_CLK_I2C2,
imx_clk_gate2("i2c2", "ipg_per", base + 0x70, 8));
return 0;
}
static const struct udevice_id imx6q_clk_ids[] = {
{ .compatible = "fsl,imx6q-ccm" },
{ },
};
U_BOOT_DRIVER(imx6q_clk) = {
.name = "clk_imx6q",
.id = UCLASS_CLK,
.of_match = imx6q_clk_ids,
.ops = &imx6q_clk_ops,
.probe = imx6q_clk_probe,
.flags = DM_FLAG_PRE_RELOC,
};
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