[PATCH v4] arm64: dts: qcom: sdm845-xiaomi-beryllium: Add DSI and panel bits

[Amit Pundir]

From: Sumit Semwal <sumit.semwal@xxxxxxxxxx>

Enabling the Display panel for beryllium requires DSI
labibb regulators and panel dts nodes to be added.
It is also required to keep some of the regulators as
always-on.

Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxx>
---
v4: Added Konrad's reviewed-by from v3. Added over current
    protection, pull-down and soft-start properties. Couldn't
    boot with downstream max-microamp values, so skipped it.
    Smoke tested on v5.12-rc5.
v3: Addressed Konrad's concerns. Configured labibb regulators
    explicitly based on downstream microvolt values. Display
    comes up fine with default discharge-resistor-kohms and
    soft-start-us properties, so didn't touch them.
    Smoke tested on next-20210209.
v2: Rebased to mainline (v5.11-rc6) and fixed build warnings.

 .../boot/dts/qcom/sdm845-xiaomi-beryllium.dts | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
index 86cbae63eaf7..7d029425336e 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
@@ -157,6 +157,14 @@ vreg_l13a_2p95: ldo13 {
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
 
+		vreg_l14a_1p8: ldo14 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-boot-on;
+			regulator-always-on;
+		};
+
 		vreg_l17a_1p3: ldo17 {
 			regulator-min-microvolt = <1304000>;
 			regulator-max-microvolt = <1304000>;
@@ -191,6 +199,7 @@ vreg_l26a_1p2: ldo26 {
 			regulator-min-microvolt = <1200000>;
 			regulator-max-microvolt = <1200000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-boot-on;
 		};
 	};
 };
@@ -200,6 +209,43 @@ &cdsp_pas {
 	firmware-name = "qcom/sdm845/cdsp.mdt";
 };
 
+&dsi0 {
+	status = "okay";
+	vdda-supply = <&vreg_l26a_1p2>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "tianma,fhd-video";
+		reg = <0>;
+		vddi0-supply = <&vreg_l14a_1p8>;
+		vddpos-supply = <&lab>;
+		vddneg-supply = <&ibb>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
+
+		port {
+			tianma_nt36672a_in_0: endpoint {
+				remote-endpoint = <&dsi0_out>;
+			};
+		};
+	};
+};
+
+&dsi0_out {
+	remote-endpoint = <&tianma_nt36672a_in_0>;
+	data-lanes = <0 1 2 3>;
+};
+
+&dsi0_phy {
+	status = "okay";
+	vdds-supply = <&vreg_l1a_0p875>;
+};
+
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
@@ -215,6 +261,31 @@ zap-shader {
 	};
 };
 
+&ibb {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+	qcom,discharge-resistor-kohms = <300>;
+};
+
+&lab {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+};
+
+&mdss {
+	status = "okay";
+};
+
+&mdss_mdp {
+	status = "okay";
+};
+
 &mss_pil {
 	status = "okay";
 	firmware-name = "qcom/sdm845/mba.mbn", "qcom/sdm845/modem.mdt";
-- 
2.25.1