From: Manish Narani <manish.narani@xilinx.com>
To: <michal.simek@xilinx.com>, <adrian.hunter@intel.com>,
<ulf.hansson@linaro.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-mmc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Manish Narani <manish.narani@xilinx.com>
Subject: [PATCH 3/7] mmc: sdhci-of-arasan: Skip Auto tuning for DDR50 mode in ZynqMP platform
Date: Tue, 15 Jun 2021 16:13:53 +0530 [thread overview]
Message-ID: <1623753837-21035-4-git-send-email-manish.narani@xilinx.com> (raw)
In-Reply-To: <1623753837-21035-1-git-send-email-manish.narani@xilinx.com>
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 <manish.narani@xilinx.com>
---
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 b13e719..1980d0b 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);
--
2.1.1
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next prev parent reply other threads:[~2021-06-15 15:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-15 10:43 [PATCH 0/7] sdhci-of-arasan driver updates for ZynqMP platform Manish Narani
2021-06-15 10:43 ` [PATCH 1/7] mmc: sdhci-of-arasan: Modified SD default speed to 19MHz for ZynqMP Manish Narani
2021-06-15 10:43 ` [PATCH 2/7] mmc: sdhci-of-arasan: Add "SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12" quirk Manish Narani
2021-06-15 10:43 ` Manish Narani [this message]
2021-06-15 10:43 ` [PATCH 4/7] mmc: host: sdhci-of-arasan: Check return value of non-void funtions Manish Narani
2021-06-15 10:43 ` [PATCH 5/7] mmc: host: sdhci-of-arasan: Use appropriate type of division macro Manish Narani
2021-06-15 10:43 ` [PATCH 6/7] mmc: host: sdhci-of-arasan: Modify data type of the clk_phase array Manish Narani
2021-06-15 10:43 ` [PATCH 7/7] mmc: arasan: Fix the issue in reading tap values from DT Manish Narani
2021-06-22 15:07 ` [PATCH 0/7] sdhci-of-arasan driver updates for ZynqMP platform Adrian Hunter
2021-06-29 15:09 ` Ulf Hansson
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