linux-kernel - [PATCH v2 3/4] arm64: dts: qcom: db820c: Add vdd

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Message-Id: <20200417070044.1376212-4-bjorn.andersson@linaro.org>
Date:   Fri, 17 Apr 2020 00:00:43 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] arm64: dts: qcom: db820c: Add vdd_gfx and tie it into mmcc

From: Rajendra Nayak <rnayak@...eaurora.org>

Add the SPMI regulator node in the PMI8994, use it to give us VDD_GX
at a fixed max nominal voltage for the db820c and specify this as supply
for the MMSS GPU_GX GDSC.

With the introduction of CPR support the range for VDD_GX should be
expanded.

Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
[bjorn: Split between pmi8994 and db820c, changed voltage, rewrote commit message]
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---

Changes since v1:
- Polished commit message
- vdd_gfx -> vdd-gfx

 arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 14 ++++++++++++++
 arch/arm64/boot/dts/qcom/pmi8994.dtsi        |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index 4692b7ad16b7..fc23b381c5e4 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -251,6 +251,10 @@ &mdss {
 	status = "okay";
 };
 
+&mmcc {
+	vdd-gfx-supply = <&vdd_gfx>;
+};
+
 &msmgpio {
 	gpio-line-names =
 		"[SPI0_DOUT]", /* GPIO_0, BLSP1_SPI_MOSI, LSEC pin 14 */
@@ -688,6 +692,16 @@ pinconf {
 	};
 };
 
+
+&pmi8994_spmi_regulators {
+	vdd_gfx: s2@...0 {
+		reg = <0x1700 0x100>;
+		regulator-name = "VDD_GFX";
+		regulator-min-microvolt = <980000>;
+		regulator-max-microvolt = <980000>;
+	};
+};
+
 &rpm_requests {
 	pm8994-regulators {
 		compatible = "qcom,rpm-pm8994-regulators";
diff --git a/arch/arm64/boot/dts/qcom/pmi8994.dtsi b/arch/arm64/boot/dts/qcom/pmi8994.dtsi
index 21e05215abe4..e5ed28ab9b2d 100644
--- a/arch/arm64/boot/dts/qcom/pmi8994.dtsi
+++ b/arch/arm64/boot/dts/qcom/pmi8994.dtsi
@@ -26,5 +26,11 @@ pmic@3 {
 		reg = <0x3 SPMI_USID>;
 		#address-cells = <1>;
 		#size-cells = <0>;
+
+		pmi8994_spmi_regulators: regulators {
+			compatible = "qcom,pmi8994-regulators";
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
 	};
 };
-- 
2.24.0