linux-kernel - [PATCH V1] arm64: dts: qcom: SD-card GPIO pin set bias-pull up

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Date:   Sat, 18 Jul 2020 12:04:01 +0530
From:   Shaik Sajida Bhanu <sbhanu@...eaurora.org>
To:     adrian.hunter@...el.com, ulf.hansson@...aro.org,
        robh+dt@...nel.org, mka@...omium.org
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, bjorn.andersson@...aro.org,
        Veerabhadrarao Badiganti <vbadigan@...eaurora.org>,
        Shaik Sajida Bhanu <sbhanu@...eaurora.org>
Subject: [PATCH V1] arm64: dts: qcom: SD-card GPIO pin set bias-pull up

From: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>

On some sc7180 based platforms where external pull is not present on cd-gpio,
this gpio state is getting read as HIGH when sleep config is applied on it.
This is resulting in SDcard rescan after suspend-resume even though SDcard
is not present.

Update cd-gpio sleep config with bais-pull to fix this issue.

Also include xo clock to sdhc clocks list which will be used
in calculating MCLK_FREQ field of DLL_CONFIG2 register.

Signed-off-by: Shaik Sajida Bhanu <sbhanu@...eaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index d78a066..8034fcc 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -682,8 +682,9 @@
 			interrupt-names = "hc_irq", "pwr_irq";
 
 			clocks = <&gcc GCC_SDCC1_APPS_CLK>,
-					<&gcc GCC_SDCC1_AHB_CLK>;
-			clock-names = "core", "iface";
+					<&gcc GCC_SDCC1_AHB_CLK>,
+					<&xo_board>;
+			clock-names = "core", "iface", "xo";
 			interconnects = <&aggre1_noc MASTER_EMMC &mc_virt SLAVE_EBI1>,
 				<&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_EMMC_CFG>;
 			interconnect-names = "sdhc-ddr","cpu-sdhc";
@@ -1819,7 +1820,7 @@
 
 				pinconf-sd-cd {
 					pins = "gpio69";
-					bias-disable;
+					bias-pull-up;
 					drive-strength = <2>;
 				};
 			};
@@ -2481,8 +2482,9 @@
 			interrupt-names = "hc_irq", "pwr_irq";
 
 			clocks = <&gcc GCC_SDCC2_APPS_CLK>,
-					<&gcc GCC_SDCC2_AHB_CLK>;
-			clock-names = "core", "iface";
+					<&gcc GCC_SDCC2_AHB_CLK>,
+					<&xo_board>;
+			clock-names = "core", "iface", "xo";
 
 			interconnects = <&aggre1_noc MASTER_SDCC_2 &mc_virt SLAVE_EBI1>,
 				<&gem_noc MASTER_APPSS_PROC &config_noc	SLAVE_SDCC_2>;
-- 
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