29 Jan
2020
29 Jan
'20
3:03 p.m.
Hi,
On 29/01/20 5:00 am, Jaehoon Chung wrote:
On 1/24/20 8:52 PM, Faiz Abbas wrote:
System firmware does not guarantee that clocks going out of the device will be stable during power management configuration. There are some DCRC errors when SPL tries to get the next stage during eMMC boot after sysfw pm configuration.
Therefore add a config_pm_pre_callback() to switch off the eMMC clock before power management and restart it after it is done.
Signed-off-by: Faiz Abbas faiz_abbas@ti.com Signed-off-by: Lokesh Vutla lokeshvutla@ti.com
+#if defined(CONFIG_K3_LOAD_SYSFW) +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);Use MMC_CLK_DISABLE instead of true.
Ok.
- }
+}
+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);ditto.
Ok.
Thanks, Faiz