From 640e2c51bdf227a540480c0f0e0d68e94113931c Mon Sep 17 00:00:00 2001
From: Baolin Wang <baolin.wang@linaro.org>
Date: Wed, 13 Feb 2019 20:32:46 +0800
Subject: [PATCH] arm64: dts: sprd: Add ADC calibration support

This patch adds phandles to the calibration cells provided by the Efuse
device, which is used to calibrate the ADC channel scales.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm64/boot/dts/sprd/sc2731.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/sprd/sc2731.dtsi b/arch/arm64/boot/dts/sprd/sc2731.dtsi
index f2f2aa50f66b..a2edc25936b3 100644
--- a/arch/arm64/boot/dts/sprd/sc2731.dtsi
+++ b/arch/arm64/boot/dts/sprd/sc2731.dtsi
@@ -63,6 +63,14 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			hwlocks = <&hwlock 12>;
+
+			adc_big_scale: calib@24 {
+				reg = <0x24 0x2>;
+			};
+
+			adc_small_scale: calib@26 {
+				reg = <0x26 0x2>;
+			};
 		};
 
 		pmic_adc: adc@480 {
@@ -72,6 +80,8 @@
 			interrupts = <0>;
 			#io-channel-cells = <1>;
 			hwlocks = <&hwlock 4>;
+			nvmem-cell-names = "big_scale_calib", "small_scale_calib";
+			nvmem-cells = <&adc_big_scale>, <&adc_small_scale>;
 		};
 
 		vibrator@ec8 {