[PATCH 3/4] arm64: dts: imx8mp-venice-gw73xx: fix TPM SPI frequency

[Tim Harvey]

The IMX8MPDS Table 37 [1] shows that the max SPI master read frequency
depends on the pins the interface is muxed behind with ECSPI2
muxed behind ECSPI2 supporting up to 25MHz.

Adjust the spi-max-frequency based on these findings.

[1] https://www.nxp.com/webapp/Download?colCode=IMX8MPIEC

Fixes: 2b3ab9d81ab4 ("arm64: dts: imx8mp-venice-gw73xx: add TPM device")
Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi
index e2b5e7ac3e46..5eb114d2360a 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi
@@ -122,7 +122,7 @@ &ecspi2 {
 	tpm at 1 {
 		compatible = "atmel,attpm20p", "tcg,tpm_tis-spi";
 		reg = <0x1>;
-		spi-max-frequency = <36000000>;
+		spi-max-frequency = <25000000>;
 	};
 };
 
-- 
2.25.1