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arm: mach-k3: am642: Use mmc start and stop callbacks

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To avoid any glitches on MMC clock line, make use of pm per and post
callbacks when loading sysfw.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
This commit is contained in:
Dave Gerlach 2021-04-23 11:27:37 -05:00 • committed by Lokesh Vutla
parent d2edabfa8d
commit f4686c3d5b
1 changed files with 33 additions and 1 deletions
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34
arch/arm/mach-k3/am642_init.c
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@ -19,6 +19,7 @@
#include <dm.h>
#include <dm/uclass-internal.h>
#include <dm/pinctrl.h>
#include <mmc.h>
#if defined(CONFIG_SPL_BUILD)
@ -51,6 +52,36 @@ static void store_boot_info_from_rom(void)
sizeof(struct rom_extended_boot_data));
}
#if defined(CONFIG_K3_LOAD_SYSFW) && CONFIG_IS_ENABLED(DM_MMC)
void k3_mmc_stop_clock(void)
{
if (spl_boot_device() == BOOT_DEVICE_MMC1) {
struct mmc *mmc = find_mmc_device(0);
if (!mmc)
return;
mmc->saved_clock = mmc->clock;
mmc_set_clock(mmc, 0, true);
}
}
void k3_mmc_restart_clock(void)
{
if (spl_boot_device() == BOOT_DEVICE_MMC1) {
struct mmc *mmc = find_mmc_device(0);
if (!mmc)
return;
mmc_set_clock(mmc, mmc->saved_clock, false);
}
}
#else
void k3_mmc_stop_clock(void) {}
void k3_mmc_restart_clock(void) {}
#endif
void board_init_f(ulong dummy)
{
#if defined(CONFIG_K3_LOAD_SYSFW)
@ -94,7 +125,8 @@ void board_init_f(ulong dummy)
* system firmware and if so, will only perform needed config
* and not attempt to load firmware again.
*/
k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), NULL, NULL);
k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), k3_mmc_stop_clock,
k3_mmc_restart_clock);
#endif
/* Output System Firmware version info */