[PATCH 3/4] arm64: dts: mediatek: mt8186: Add GPU speed bin NVMEM cells

[Chen-Yu Tsai]

On the MT8186, the chip is binned for different GPU voltages at the
highest OPPs. The binning value is stored in the efuse.

Add the NVMEM cell, and tie it to the GPU.

Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8186.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
index 6735c1feb26d..c58d7eb87b1d 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
@@ -1567,6 +1567,11 @@ efuse: efuse at 11cb0000 {
 			reg = <0 0x11cb0000 0 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			gpu_speedbin: gpu-speed-bin at 59c {
+				reg = <0x59c 0x4>;
+				bits = <0 3>;
+			};
 		};
 
 		mipi_tx0: dsi-phy at 11cc0000 {
@@ -1599,6 +1604,8 @@ gpu: gpu at 13040000 {
 					<&spm MT8186_POWER_DOMAIN_MFG3>;
 			power-domain-names = "core0", "core1";
 			#cooling-cells = <2>;
+			nvmem-cells = <&gpu_speedbin>;
+			nvmem-cell-names = "speed-bin";
 			status = "disabled";
 		};
 
-- 
2.41.0.rc0.172.g3f132b7071-goog