arm64: dts: sprd: Add SC27XX fuel gauge device

Add Spreadtrum SC27XX fuel gauge device node to calculate the
battery capacity.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/arm64/boot/dts/sprd/sc2731.dtsi b/arch/arm64/boot/dts/sprd/sc2731.dtsi
index dbf6242..4a79ddf 100644 (file)
--- a/arch/arm64/boot/dts/sprd/sc2731.dtsi
+++ b/arch/arm64/boot/dts/sprd/sc2731.dtsi
@@ -70,6 +70,11 @@
                        #size-cells = <1>;
                        hwlocks = <&hwlock 12>;
 
+                       fgu_calib: calib@6 {
+                               reg = <0x6 0x2>;
+                               bits = <0 9>;
+                       };
+
                        adc_big_scale: calib@24 {
                                reg = <0x24 0x2>;
                        };
@@ -90,6 +95,19 @@
                        nvmem-cells = <&adc_big_scale>, <&adc_small_scale>;
                };
 
+               fgu@a00 {
+                       compatible = "sprd,sc2731-fgu";
+                       reg = <0xa00>;
+                       bat-detect-gpio = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
+                       io-channels = <&pmic_adc 3>, <&pmic_adc 6>;
+                       io-channel-names = "bat-temp", "charge-vol";
+                       monitored-battery = <&bat>;
+                       nvmem-cell-names = "fgu_calib";
+                       nvmem-cells = <&fgu_calib>;
+                       interrupt-parent = <&sc2731_pmic>;
+                       interrupts = <4>;
+               };
+
                vibrator@ec8 {
                        compatible = "sprd,sc27xx-vibrator", "sprd,sc2731-vibrator";
                        reg = <0xec8>;