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clk: imx8: add i.MX8QM clk driver

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Add i.MX8QM clk driver, SDHC/FEC/UART/I2C supported.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2019-03-05 02:32:35 +00:00 committed by Stefano Babic
parent 98c63a7840
commit e45efe90cd
3 changed files with 309 additions and 0 deletions
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1
drivers/clk/imx/Makefile
View File

@ -6,4 +6,5 @@ obj-$(CONFIG_CLK_IMX8) += clk-imx8.o
ifdef CONFIG_CLK_IMX8
obj-$(CONFIG_IMX8QXP) += clk-imx8qxp.o
obj-$(CONFIG_IMX8QM) += clk-imx8qm.o
endif

1
drivers/clk/imx/clk-imx8.c
View File

@ -101,6 +101,7 @@ static int imx8_clk_probe(struct udevice *dev)
static const struct udevice_id imx8_clk_ids[] = {
{ .compatible = "fsl,imx8qxp-clk" },
{ .compatible = "fsl,imx8qm-clk" },
{ },
};

307
drivers/clk/imx/clk-imx8qm.c Normal file
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@ -0,0 +1,307 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2018 NXP
* Peng Fan <peng.fan@nxp.com>
*/
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
#include <asm/arch/sci/sci.h>
#include <asm/arch/clock.h>
#include <dt-bindings/clock/imx8qm-clock.h>
#include <dt-bindings/soc/imx_rsrc.h>
#include <misc.h>
#include "clk-imx8.h"
#if CONFIG_IS_ENABLED(CMD_CLK)
struct imx8_clks imx8_clk_names[] = {
{ IMX8QM_A53_DIV, "A53_DIV" },
{ IMX8QM_UART0_CLK, "UART0" },
{ IMX8QM_UART1_CLK, "UART1" },
{ IMX8QM_UART2_CLK, "UART2" },
{ IMX8QM_UART3_CLK, "UART3" },
{ IMX8QM_SDHC0_CLK, "SDHC0" },
{ IMX8QM_SDHC1_CLK, "SDHC1" },
{ IMX8QM_SDHC2_CLK, "SDHC2" },
{ IMX8QM_ENET0_AHB_CLK, "ENET0_AHB" },
{ IMX8QM_ENET0_IPG_CLK, "ENET0_IPG" },
{ IMX8QM_ENET0_REF_DIV, "ENET0_REF" },
{ IMX8QM_ENET0_PTP_CLK, "ENET0_PTP" },
{ IMX8QM_ENET1_AHB_CLK, "ENET1_AHB" },
{ IMX8QM_ENET1_IPG_CLK, "ENET1_IPG" },
{ IMX8QM_ENET1_REF_DIV, "ENET1_REF" },
{ IMX8QM_ENET1_PTP_CLK, "ENET1_PTP" },
};
int num_clks = ARRAY_SIZE(imx8_clk_names);
#endif
ulong imx8_clk_get_rate(struct clk *clk)
{
sc_pm_clk_t pm_clk;
ulong rate;
u16 resource;
int ret;
debug("%s(#%lu)\n", __func__, clk->id);
switch (clk->id) {
case IMX8QM_A53_DIV:
resource = SC_R_A53;
pm_clk = SC_PM_CLK_CPU;
break;
case IMX8QM_I2C0_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C1_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C2_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C3_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC0_IPG_CLK:
case IMX8QM_SDHC0_CLK:
case IMX8QM_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC1_IPG_CLK:
case IMX8QM_SDHC1_CLK:
case IMX8QM_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART0_IPG_CLK:
case IMX8QM_UART0_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART1_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART2_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART3_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET0_IPG_CLK:
case IMX8QM_ENET0_AHB_CLK:
case IMX8QM_ENET0_REF_DIV:
case IMX8QM_ENET0_PTP_CLK:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET1_IPG_CLK:
case IMX8QM_ENET1_AHB_CLK:
case IMX8QM_ENET1_REF_DIV:
case IMX8QM_ENET1_PTP_CLK:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QM_UART0_IPG_CLK ||
clk->id >= IMX8QM_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -ENOTSUPP;
};
ret = sc_pm_get_clock_rate(-1, resource, pm_clk,
(sc_pm_clock_rate_t *)&rate);
if (ret) {
printf("%s err %d\n", __func__, ret);
return ret;
}
return rate;
}
ulong imx8_clk_set_rate(struct clk *clk, unsigned long rate)
{
sc_pm_clk_t pm_clk;
u32 new_rate = rate;
u16 resource;
int ret;
debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
switch (clk->id) {
case IMX8QM_I2C0_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C1_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C2_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C3_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART0_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART1_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART2_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART3_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC0_IPG_CLK:
case IMX8QM_SDHC0_CLK:
case IMX8QM_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC1_IPG_CLK:
case IMX8QM_SDHC1_CLK:
case IMX8QM_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET0_IPG_CLK:
case IMX8QM_ENET0_AHB_CLK:
case IMX8QM_ENET0_REF_DIV:
case IMX8QM_ENET0_PTP_CLK:
case IMX8QM_ENET0_ROOT_DIV:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET1_IPG_CLK:
case IMX8QM_ENET1_AHB_CLK:
case IMX8QM_ENET1_REF_DIV:
case IMX8QM_ENET1_PTP_CLK:
case IMX8QM_ENET1_ROOT_DIV:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QM_UART0_IPG_CLK ||
clk->id >= IMX8QM_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -ENOTSUPP;
};
ret = sc_pm_set_clock_rate(-1, resource, pm_clk, &new_rate);
if (ret) {
printf("%s err %d\n", __func__, ret);
return ret;
}
return new_rate;
}
int __imx8_clk_enable(struct clk *clk, bool enable)
{
sc_pm_clk_t pm_clk;
u16 resource;
int ret;
debug("%s(#%lu)\n", __func__, clk->id);
switch (clk->id) {
case IMX8QM_I2C0_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C1_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C2_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_I2C3_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART0_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART1_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART2_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_UART3_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC0_IPG_CLK:
case IMX8QM_SDHC0_CLK:
case IMX8QM_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_SDHC1_IPG_CLK:
case IMX8QM_SDHC1_CLK:
case IMX8QM_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET0_IPG_CLK:
case IMX8QM_ENET0_AHB_CLK:
case IMX8QM_ENET0_REF_DIV:
case IMX8QM_ENET0_PTP_CLK:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QM_ENET1_IPG_CLK:
case IMX8QM_ENET1_AHB_CLK:
case IMX8QM_ENET1_REF_DIV:
case IMX8QM_ENET1_PTP_CLK:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QM_UART0_IPG_CLK ||
clk->id >= IMX8QM_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -ENOTSUPP;
}
ret = sc_pm_clock_enable(-1, resource, pm_clk, enable, 0);
if (ret) {
printf("%s err %d\n", __func__, ret);
return ret;
}
return 0;
}