linux-kernel - [PATCH 1/7] arm64: zynqmp: Enable iio-hwmon for ina226 on zcu100

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Message-Id: <3697b726f12df89d6fc222b64672f8fc3779ec3c.1578578535.git.michal.simek@xilinx.com>
Date:   Thu,  9 Jan 2020 15:02:15 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-arm-kernel@...ts.infradead.org, git@...inx.com
Cc:     Anurag Kumar Vulisha <anurag.kumar.vulisha@...inx.com>,
        Jan Kiszka <jan.kiszka@...mens.com>,
        Mark Rutland <mark.rutland@....com>,
        Rajan Vaja <rajan.vaja@...inx.com>,
        Rob Herring <robh+dt@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/7] arm64: zynqmp: Enable iio-hwmon for ina226 on zcu100

ina226 hwmon driver is deprecated and it is recommended to use new iio
based driver. The patch is enabling iio-hwmon driver to export
functionality from IIO to hwmon interface to be able to use lm-sensors
package.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
index a109e82982ae..d60110ad8367 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
@@ -103,6 +103,11 @@ sdio_pwrseq: sdio-pwrseq {
 		reset-gpios = <&gpio 7 GPIO_ACTIVE_LOW>; /* WIFI_EN */
 		post-power-on-delay-ms = <10>;
 	};
+
+	ina226 {
+		compatible = "iio-hwmon";
+		io-channels = <&u35 0>, <&u35 1>, <&u35 2>, <&u35 3>;
+	};
 };
 
 &dcc {
@@ -191,8 +196,9 @@ i2csw_5: i2c@5 {
 			#size-cells = <0>;
 			reg = <5>;
 			/* PS_PMBUS */
-			ina226@40 { /* u35 */
+			u35: ina226@40 { /* u35 */
 				compatible = "ti,ina226";
+				#io-channel-cells = <1>;
 				reg = <0x40>;
 				shunt-resistor = <10000>;
 				/* MIO31 is alert which should be routed to PMUFW */
-- 
2.24.0