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u-boot/drivers/clk/imx/clk-imx8qxp.c
Fabio Estevam bcbd1364cb clk: clk-imx8qxp: Add LPUART IPG entries 
Since commit cc7df0b9e8 ("serial: lpuart: Enable IPG clock")
the colibri-imx8qxp board no longer boots.

The reason is that the imx8qxp clock driver does not handle the
LPUART IPG clocks inside get_rate(), set_rate() and enable() functions.

Fix the boot regression by adding the LPUART IPG entries.

Fixes: cc7df0b9e8 ("serial: lpuart: Enable IPG clock")
Reported-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Toradex Colibri iMX8X
Acked-by: Sean Anderson <seanga2@gmail.com>
2024-03-22 11:10:39 -04:00

336 lines
7.4 KiB
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// 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 <log.h>
#include <firmware/imx/sci/sci.h>
#include <asm/arch/clock.h>
#include <dt-bindings/clock/imx8qxp-clock.h>
#include <dt-bindings/soc/imx_rsrc.h>
#include <misc.h>
#include "clk-imx8.h"
#if IS_ENABLED(CONFIG_CMD_CLK)
struct imx8_clks imx8_clk_names[] = {
{ IMX8QXP_A35_DIV, "A35_DIV" },
{ IMX8QXP_I2C0_CLK, "I2C0" },
{ IMX8QXP_I2C1_CLK, "I2C1" },
{ IMX8QXP_I2C2_CLK, "I2C2" },
{ IMX8QXP_I2C3_CLK, "I2C3" },
{ IMX8QXP_UART0_CLK, "UART0" },
{ IMX8QXP_UART1_CLK, "UART1" },
{ IMX8QXP_UART2_CLK, "UART2" },
{ IMX8QXP_UART3_CLK, "UART3" },
{ IMX8QXP_SDHC0_CLK, "SDHC0" },
{ IMX8QXP_SDHC1_CLK, "SDHC1" },
{ IMX8QXP_ENET0_AHB_CLK, "ENET0_AHB" },
{ IMX8QXP_ENET0_IPG_CLK, "ENET0_IPG" },
{ IMX8QXP_ENET0_REF_DIV, "ENET0_REF" },
{ IMX8QXP_ENET0_PTP_CLK, "ENET0_PTP" },
{ IMX8QXP_ENET1_AHB_CLK, "ENET1_AHB" },
{ IMX8QXP_ENET1_IPG_CLK, "ENET1_IPG" },
{ IMX8QXP_ENET1_REF_DIV, "ENET1_REF" },
{ IMX8QXP_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 IMX8QXP_A35_DIV:
resource = SC_R_A35;
pm_clk = SC_PM_CLK_CPU;
break;
case IMX8QXP_I2C0_CLK:
case IMX8QXP_I2C0_IPG_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C1_CLK:
case IMX8QXP_I2C1_IPG_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C2_CLK:
case IMX8QXP_I2C2_IPG_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C3_CLK:
case IMX8QXP_I2C3_IPG_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC0_IPG_CLK:
case IMX8QXP_SDHC0_CLK:
case IMX8QXP_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC1_IPG_CLK:
case IMX8QXP_SDHC1_CLK:
case IMX8QXP_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART0_CLK:
case IMX8QXP_UART0_IPG_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART1_CLK:
case IMX8QXP_UART1_IPG_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART2_CLK:
case IMX8QXP_UART2_IPG_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART3_CLK:
case IMX8QXP_UART3_IPG_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET0_IPG_CLK:
case IMX8QXP_ENET0_AHB_CLK:
case IMX8QXP_ENET0_REF_DIV:
case IMX8QXP_ENET0_PTP_CLK:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET1_IPG_CLK:
case IMX8QXP_ENET1_AHB_CLK:
case IMX8QXP_ENET1_REF_DIV:
case IMX8QXP_ENET1_PTP_CLK:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QXP_UART0_IPG_CLK ||
clk->id >= IMX8QXP_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -EINVAL;
};
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 IMX8QXP_I2C0_CLK:
case IMX8QXP_I2C0_IPG_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C1_CLK:
case IMX8QXP_I2C1_IPG_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C2_CLK:
case IMX8QXP_I2C2_IPG_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C3_CLK:
case IMX8QXP_I2C3_IPG_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART0_CLK:
case IMX8QXP_UART0_IPG_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART1_CLK:
case IMX8QXP_UART1_IPG_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART2_CLK:
case IMX8QXP_UART2_IPG_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART3_CLK:
case IMX8QXP_UART3_IPG_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC0_IPG_CLK:
case IMX8QXP_SDHC0_CLK:
case IMX8QXP_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC1_SEL:
case IMX8QXP_SDHC0_SEL:
return 0;
case IMX8QXP_SDHC1_IPG_CLK:
case IMX8QXP_SDHC1_CLK:
case IMX8QXP_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET0_IPG_CLK:
case IMX8QXP_ENET0_AHB_CLK:
case IMX8QXP_ENET0_REF_DIV:
case IMX8QXP_ENET0_PTP_CLK:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET1_IPG_CLK:
case IMX8QXP_ENET1_AHB_CLK:
case IMX8QXP_ENET1_REF_DIV:
case IMX8QXP_ENET1_PTP_CLK:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QXP_UART0_IPG_CLK ||
clk->id >= IMX8QXP_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -EINVAL;
};
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 IMX8QXP_I2C0_CLK:
case IMX8QXP_I2C0_IPG_CLK:
resource = SC_R_I2C_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C1_CLK:
case IMX8QXP_I2C1_IPG_CLK:
resource = SC_R_I2C_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C2_CLK:
case IMX8QXP_I2C2_IPG_CLK:
resource = SC_R_I2C_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_I2C3_CLK:
case IMX8QXP_I2C3_IPG_CLK:
resource = SC_R_I2C_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART0_CLK:
case IMX8QXP_UART0_IPG_CLK:
resource = SC_R_UART_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART1_CLK:
case IMX8QXP_UART1_IPG_CLK:
resource = SC_R_UART_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART2_CLK:
case IMX8QXP_UART2_IPG_CLK:
resource = SC_R_UART_2;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_UART3_CLK:
case IMX8QXP_UART3_IPG_CLK:
resource = SC_R_UART_3;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC0_IPG_CLK:
case IMX8QXP_SDHC0_CLK:
case IMX8QXP_SDHC0_DIV:
resource = SC_R_SDHC_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_SDHC1_IPG_CLK:
case IMX8QXP_SDHC1_CLK:
case IMX8QXP_SDHC1_DIV:
resource = SC_R_SDHC_1;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET0_IPG_CLK:
case IMX8QXP_ENET0_AHB_CLK:
case IMX8QXP_ENET0_REF_DIV:
case IMX8QXP_ENET0_PTP_CLK:
resource = SC_R_ENET_0;
pm_clk = SC_PM_CLK_PER;
break;
case IMX8QXP_ENET1_IPG_CLK:
case IMX8QXP_ENET1_AHB_CLK:
case IMX8QXP_ENET1_REF_DIV:
case IMX8QXP_ENET1_PTP_CLK:
resource = SC_R_ENET_1;
pm_clk = SC_PM_CLK_PER;
break;
default:
if (clk->id < IMX8QXP_UART0_IPG_CLK ||
clk->id >= IMX8QXP_CLK_END) {
printf("%s(Invalid clk ID #%lu)\n",
__func__, clk->id);
return -EINVAL;
}
return -EINVAL;
}
ret = sc_pm_clock_enable(-1, resource, pm_clk, enable, 0);
if (ret) {
printf("%s err %d\n", __func__, ret);
return ret;
}
return 0;
}
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