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Subject[PATCH v2 3/3] arm64: dts: qcom: sdm845: Add SD nodes for sdm845-mtp
Date
Enable support for one of the micro SD slots on the MTP.

Signed-off-by: Evan Green <evgreen@chromium.org>
---

Changes in v2:
- Fixed alphabetization of node placement in sdm845-mtp.dtsi (Doug)
- Fixed card detect name to match schematics (Doug).
- Moved comment about drive strength next to the drive-strength entry
(Doug)
- Removed drive-strength from card detect input pin (Doug).
- Consolidated tlmm nodes in MTP.

arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 58 ++++++++++++++++++++++++-
1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index b3def03581775..cde76da42cbb7 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -7,6 +7,7 @@

/dts-v1/;

+#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
#include "sdm845.dtsi"

@@ -358,8 +359,16 @@
status = "okay";
};

-&tlmm {
- gpio-reserved-ranges = <0 4>, <81 4>;
+&sdhc_2 {
+ status = "okay";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data &sd_card_det_n>;
+
+ vmmc-supply = <&vreg_l21a_2p95>;
+ vqmmc-supply = <&vddpx_2>;
+
+ cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
};

&uart9 {
@@ -450,3 +459,48 @@
bias-pull-up;
};
};
+
+&tlmm {
+ gpio-reserved-ranges = <0 4>, <81 4>;
+
+ sdc2_clk: sdc2-clk {
+ pinconf {
+ pins = "sdc2_clk";
+ bias-disable;
+
+ /*
+ * It seems that mmc_test reports errors if drive
+ * strength is not 16 on clk, cmd, and data pins.
+ */
+ drive-strength = <16>;
+ };
+ };
+
+ sdc2_cmd: sdc2-cmd {
+ pinconf {
+ pins = "sdc2_cmd";
+ bias-pull-up;
+ drive-strength = <16>;
+ };
+ };
+
+ sdc2_data: sdc2-data {
+ pinconf {
+ pins = "sdc2_data";
+ bias-pull-up;
+ drive-strength = <16>;
+ };
+ };
+
+ sd_card_det_n: sd-card-det-n {
+ pinmux {
+ pins = "gpio126";
+ function = "gpio";
+ };
+
+ pinconf {
+ pins = "gpio126";
+ bias-pull-up;
+ };
+ };
+};
--
2.18.1
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