[PATCH v2 20/20] arm64: dts: mediatek: mt8195: Add SVS node and reduce LVTS_AP iospace

[AngeloGioacchino Del Regno]

Add the MediaTek SVS node: this will lower the voltage of various
components of the SoC based on chip quality (read from fuses) in
order to save power and generate less heat.
Also, reduce the LVTS_AP iospace to 0xc00, because that's exactly
where SVS starts.
 - LVTS_AP start: 0x1100b000 length: 0xc00
 - SVS start:     0x1100bc00 length: 0x400

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 54c674c45b49..54debd4cf8e6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -1115,7 +1115,7 @@ spi0: spi at 1100a000 {
 
 		lvts_ap: thermal-sensor at 1100b000 {
 			compatible = "mediatek,mt8195-lvts-ap";
-			reg = <0 0x1100b000 0 0x1000>;
+			reg = <0 0x1100b000 0 0xc00>;
 			interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH 0>;
 			clocks = <&infracfg_ao CLK_INFRA_AO_THERM>;
 			resets = <&infracfg_ao MT8195_INFRA_RST0_THERM_CTRL_SWRST>;
@@ -1124,6 +1124,18 @@ lvts_ap: thermal-sensor at 1100b000 {
 			#thermal-sensor-cells = <1>;
 		};
 
+		svs: svs at 1100bc00 {
+			compatible = "mediatek,mt8195-svs";
+			reg = <0 0x1100bc00 0 0x400>;
+			interrupts = <GIC_SPI 199 IRQ_TYPE_LEVEL_HIGH 0>;
+			clocks = <&infracfg_ao CLK_INFRA_AO_THERM>;
+			clock-names = "main";
+			nvmem-cells = <&svs_calib_data &lvts_efuse_data1>;
+			nvmem-cell-names = "svs-calibration-data", "t-calibration-data";
+			resets = <&infracfg_ao MT8195_INFRA_RST3_THERM_CTRL_PTP_SWRST>;
+			reset-names = "svs_rst";
+		};
+
 		disp_pwm0: pwm at 1100e000 {
 			compatible = "mediatek,mt8195-disp-pwm", "mediatek,mt8183-disp-pwm";
 			reg = <0 0x1100e000 0 0x1000>;
@@ -1682,6 +1694,9 @@ lvts_efuse_data1: lvts1-calib at 1bc {
 			lvts_efuse_data2: lvts2-calib at 1d0 {
 				reg = <0x1d0 0x38>;
 			};
+			svs_calib_data: svs-calib at 580 {
+				reg = <0x580 0x64>;
+			};
 		};
 
 		u3phy2: t-phy at 11c40000 {
-- 
2.42.0