linux-kernel - [PATCH v2] arm64: dts: qcom: pmi8998: add rradc node

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Message-Id: <20221017185609.2280067-1-caleb.connolly@linaro.org>
Date:   Mon, 17 Oct 2022 19:56:09 +0100
From:   Caleb Connolly <caleb.connolly@...aro.org>
To:     caleb.connolly@...aro.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        devicetree@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>
Subject: [PATCH v2] arm64: dts: qcom: pmi8998: add rradc node

Add a DT node for the Round Robin ADC found in the PMI8998 PMIC.

The RRADC reports PMIC die and skin temperatures, as well as
battery/charger thermals. It also reports USB and DC charger voltage and
current measurements.

Signed-off-by: Caleb Connolly <caleb.connolly@...aro.org>
---
This patch introduces a new dtbs_check warning which will be fixed by
https://lore.kernel.org/linux-arm-msm/20221017185105.2279129-1-caleb.connolly@linaro.org/

V1: https://lore.kernel.org/linux-arm-msm/20221016180330.1912214-1-caleb.connolly@linaro.org/
Changes since v1:
 * Change node name from adc@ to rradc@, see linked patch
 * Enable the RRADC by default, rather than per-device
---
 arch/arm64/boot/dts/qcom/pmi8998.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pmi8998.dtsi b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
index 6d3d212560c1..95c74d88eb93 100644
--- a/arch/arm64/boot/dts/qcom/pmi8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
@@ -18,6 +18,14 @@ pmi8998_gpio: gpios@...0 {
 			interrupt-controller;
 			#interrupt-cells = <2>;
 		};
+
+		pmi8998_rradc: rradc@...0 {
+			compatible = "qcom,pmi8998-rradc";
+			reg = <0x4500>;
+			#io-channel-cells = <1>;
+
+			status = "okay";
+		};
 	};
 
 	pmi8998_lsid1: pmic@3 {
-- 
2.38.0