arm64: dts: db820c: add support to external sd card.

This patch adds support to external sd card.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

2 files changed, 49 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi
new file mode 100644
index 000000000000..24552f19b3fa
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c-pins.dtsi
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+&msmgpio {
+        sdc2_cd_on: sdc2_cd_on {
+                mux {
+                        pins = "gpio38";
+                        function = "gpio";
+                };
+
+                config {
+                        pins = "gpio38";
+                        bias-pull-up;           /* pull up */
+                        drive-strength = <16>;  /* 16 MA */
+                };
+        };
+
+        sdc2_cd_off: sdc2_cd_off {
+                mux {
+                        pins = "gpio38";
+                        function = "gpio";
+                };
+
+                config {
+                        pins = "gpio38";
+                        bias-pull-up;           /* pull up */
+                        drive-strength = <2>;   /* 2 MA */
+                };
+        };
+};
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index adf7602b7c23..afb218cffc60 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -12,6 +12,7 @@
  */
 
 #include "msm8996.dtsi"
+#include "apq8096-db820c-pins.dtsi"
 
 / {
         aliases {
@@ -74,5 +75,14 @@
                         label = "HS-SPI1";
                         status = "okay";
                 };
+
+                sdhci@74a4900 {
+                /* External SD card */
+                        pinctrl-names = "default", "sleep";
+                        pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
+                        pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+                        cd-gpios = <&msmgpio 38 0x1>;
+                        status = "okay";
+                };
         };
 };