6.15-stable review patch. If anyone has any objections, please let me know.
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From: Tim Harvey tharvey@gateworks.com
commit 1fc02c2086003c5fdaa99cde49a987992ff1aae4 upstream.
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") Cc: stable@vger.kernel.org Signed-off-by: Tim Harvey tharvey@gateworks.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi @@ -122,7 +122,7 @@ tpm@1 { compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x1>; - spi-max-frequency = <36000000>; + spi-max-frequency = <25000000>; }; };