From: Judith Mendez jm@ti.com
stable inclusion from stable-v6.6.33 commit fa9a2c696ad1b2b7251c3110f0f86343a6845854 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit d465234493bb6ad1b9c10a0c9ef9881b8d85081a ]
For DDR52 timing, DLL is enabled but tuning is not carried out, therefore the ITAPDLY value in PHY CTRL 4 register is not correct. Fix this by writing ITAPDLY after enabling DLL.
Fixes: a161c45f2979 ("mmc: sdhci_am654: Enable DLL only for some speed modes") Signed-off-by: Judith Mendez jm@ti.com Reviewed-by: Andrew Davis afd@ti.com Acked-by: Adrian Hunter adrian.hunter@intel.com Link: https://lore.kernel.org/r/20240320223837.959900-3-jm@ti.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/mmc/host/sdhci_am654.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index c3b07957736e..f38fa28b9914 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -305,6 +305,7 @@ static void sdhci_am654_set_clock(struct sdhci_host *host, unsigned int clock) if (timing > MMC_TIMING_UHS_SDR25 && clock >= CLOCK_TOO_SLOW_HZ) { sdhci_am654_setup_dll(host, clock); sdhci_am654->dll_enable = true; + sdhci_am654_write_itapdly(sdhci_am654, sdhci_am654->itap_del_sel[timing]); } else { sdhci_am654_setup_delay_chain(sdhci_am654, timing); sdhci_am654->dll_enable = false;