[PATCH 4/4] riscv: dts: sophgo: Limit SG2042 SPI NOR to 12.5 MHz

[Han Gao]

Use 12.5 MHz on the SG2042 EVBs and Milk-V Pioneer to match the vendor
kernel. The existing 50 MHz limit raises SCK once the driver starts
honoring spi-max-frequency.

Signed-off-by: Han Gao <gaohan at iscas.ac.cn>
---
 arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts        | 4 ++--
 arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts        | 2 +-
 arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
index b116dfa904cd982dc41c8cffdc770d4d0f81e0a7..9f403e564694eae14913f6ab23080a6333df15ae 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
@@ -256,7 +256,7 @@ &spifmc0 {
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <50000000>;
+		spi-max-frequency = <12500000>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
 	};
@@ -268,7 +268,7 @@ &spifmc1 {
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <50000000>;
+		spi-max-frequency = <12500000>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
 	};
diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
index b2ceae2d8829ec16c99c2ea2b040c433b819093e..d8c5814f22581076e6b5114f762d4fd090681b80 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
@@ -244,7 +244,7 @@ &spifmc1 {
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <50000000>;
+		spi-max-frequency = <12500000>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
 	};
diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index ecf8c1e290792c3a27651040eae3c603741cd0c7..4f39eb56b364894f17b97d482b6d9d867a32ad2e 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -177,7 +177,7 @@ &spifmc0 {
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <50000000>;
+		spi-max-frequency = <12500000>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
 	};
@@ -189,7 +189,7 @@ &spifmc1 {
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <50000000>;
+		spi-max-frequency = <12500000>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
 	};

-- 
2.47.3