From 256e4e4e836ce2452f6874a1612dc3e29f512143 Mon Sep 17 00:00:00 2001 From: Manish Narani Date: Tue, 15 Jun 2021 16:13:53 +0530 Subject: [PATCH] mmc: sdhci-of-arasan: Skip Auto tuning for DDR50 mode in ZynqMP platform ZynqMP platform does not perform auto tuning in DDR50 mode. Skip the same while the card is operating in DDR50 mode. Signed-off-by: Manish Narani Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/1623753837-21035-4-git-send-email-manish.narani@xilinx.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-of-arasan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index e61dbe0cf9fe..0f6ef4f45825 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -894,6 +894,10 @@ static int arasan_zynqmp_execute_tuning(struct mmc_host *mmc, u32 opcode) NODE_SD_1; int err; + /* ZynqMP SD controller does not perform auto tuning in DDR50 mode */ + if (mmc->ios.timing == MMC_TIMING_UHS_DDR50) + return 0; + arasan_zynqmp_dll_reset(host, device_id); err = sdhci_execute_tuning(mmc, opcode);