6.12-stable review patch. If anyone has any objections, please let me know.
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From: Tim Harvey tharvey@gateworks.com
commit 0bdaca0922175478ddeadf8e515faa5269f6fae6 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: 531936b218d8 ("arm64: dts: imx8mp-venice-gw74xx: update to revB PCB") 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-gw74xx.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts @@ -199,7 +199,7 @@ tpm@0 { compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x0>; - spi-max-frequency = <36000000>; + spi-max-frequency = <25000000>; }; };