linux-kernel - [PATCH] mmc: sdhci-acpi: For amd device set driver type as MMC_SET_DRIVER_TYPE

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Message-Id: <20200623133347.4598-1-akshu.agrawal@amd.com>
Date:   Tue, 23 Jun 2020 19:03:27 +0530
From:   Akshu Agrawal <akshu.agrawal@....com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     akshu.agrawal@....com, rrangel@...gle.com,
        nehal-bakulchandra.shah@....com,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] mmc: sdhci-acpi: For amd device set driver type as MMC_SET_DRIVER_TYPE_A

HS400/HS200/eMMC HS doesn't have Preset Value register.
Hence, sdhci_set_ios function overrides the value set by fmw to
SDHCI_CTRL_DRV_TYPE_B.
This patch sets drv_type to MMC_SET_DRIVER_TYPE_A
so that host_control2 register gets updated with the required
strength value.

Signed-off-by: Akshu Agrawal <akshu.agrawal@....com>
---
 drivers/mmc/host/sdhci-acpi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index d8b76cb8698a..48ecbd0b180d 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -542,6 +542,7 @@ static int amd_select_drive_strength(struct mmc_card *card,
 				     unsigned int max_dtr, int host_drv,
 				     int card_drv, int *drv_type)
 {
+	*drv_type = MMC_SET_DRIVER_TYPE_A;
 	return MMC_SET_DRIVER_TYPE_A;
 }
 
-- 
2.20.1