From: Ben Chuang <benchuanggli@gmail.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
ben.chuang@genesyslogic.com.tw, renius.chen@genesyslogic.com.tw,
custos.mentis@gmail.com, Ben Chuang <benchuanggli@gmail.com>
Subject: [PATCH] mmc: sdhci-pci-gli: Fix can not access GL9750 after reboot from Windows 10
Date: Mon, 4 May 2020 14:39:57 +0800 [thread overview]
Message-ID: <20200504063957.6638-1-benchuanggli@gmail.com> (raw)
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Need to clear some bits in a vendor-defined register after reboot from
Windows 10.
Fixes: e51df6ce668a ("mmc: host: sdhci-pci: Add Genesys Logic GL975x support")
Reported-by: Grzegorz Kowal <custos.mentis@gmail.com>
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/host/sdhci-pci-gli.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
index ce15a05f23d4..8170b659f2af 100644
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -26,6 +26,9 @@
#define SDHCI_GLI_9750_DRIVING_2 GENMASK(27, 26)
#define GLI_9750_DRIVING_1_VALUE 0xFFF
#define GLI_9750_DRIVING_2_VALUE 0x3
+#define SDHCI_GLI_9750_SEL_1 BIT(29)
+#define SDHCI_GLI_9750_SEL_2 BIT(31)
+#define SDHCI_GLI_9750_ALL_RST (BIT(24)|BIT(25)|BIT(28)|BIT(30))
#define SDHCI_GLI_9750_PLL 0x864
#define SDHCI_GLI_9750_PLL_TX2_INV BIT(23)
@@ -122,6 +125,8 @@ static void gli_set_9750(struct sdhci_host *host)
GLI_9750_DRIVING_1_VALUE);
driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_2,
GLI_9750_DRIVING_2_VALUE);
+ driving_value &= ~(SDHCI_GLI_9750_SEL_1|SDHCI_GLI_9750_SEL_2|SDHCI_GLI_9750_ALL_RST);
+ driving_value |= SDHCI_GLI_9750_SEL_2;
sdhci_writel(host, driving_value, SDHCI_GLI_9750_DRIVING);
sw_ctrl_value &= ~SDHCI_GLI_9750_SW_CTRL_4;
--
2.26.2
next reply other threads:[~2020-05-04 6:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 6:39 Ben Chuang [this message]
2020-05-04 7:27 ` [PATCH] mmc: sdhci-pci-gli: Fix can not access GL9750 after reboot from Windows 10 Adrian Hunter
2020-05-05 9:15 ` Grzegorz Kowal
2020-05-05 11:32 ` Ulf Hansson
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