[PATCH 4/5] arm64: dts: mediatek: mt8188: Add efuse for GPU speed binning

[Pablo Sun]

The OPP table of mt8188 GPU contains duplicated frequencies
for different speed bins.

In order to support OPP table, we need to provide the speed bin info
in the efuse data so the GPU driver could properly set the
supported hardware speed bin.

Signed-off-by: Pablo Sun <pablo.sun at mediatek.com>
---
 arch/arm64/boot/dts/mediatek/mt8188.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
index 02a5bb4dbd1f..129edaf33704 100644
--- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
@@ -1752,6 +1752,11 @@ efuse: efuse at 11f20000 {
 			lvts_efuse_data1: lvts1-calib at 1ac {
 				reg = <0x1ac 0x40>;
 			};
+
+			gpu_speedbin: gpu-speedbin at 580 {
+				reg = <0x581 0x1>;
+				bits = <0 3>;
+			};
 		};
 
 		gpu: gpu at 13000000 {
@@ -1763,6 +1768,8 @@ gpu: gpu at 13000000 {
 				     <GIC_SPI 382 IRQ_TYPE_LEVEL_HIGH 0>,
 				     <GIC_SPI 381 IRQ_TYPE_LEVEL_HIGH 0>;
 			interrupt-names = "job", "mmu", "gpu";
+			nvmem-cells = <&gpu_speedbin>;
+			nvmem-cell-names = "speed-bin";
 			operating-points-v2 = <&gpu_opp_table>;
 			power-domains = <&spm MT8188_POWER_DOMAIN_MFG2>,
 					<&spm MT8188_POWER_DOMAIN_MFG3>,
-- 
2.45.2