Re: [PATCH 5/8] arm64: dts: imx8mm-kontron: Fix CAN SPI clock frequency
From: Shawn Guo <shawnguo@kernel.org>
Date: 2021-10-05 07:12:39
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linux-devicetree, lkml, stable
On Thu, Sep 30, 2021 at 05:56:28PM +0200, Frieder Schrempf wrote:
From: Frieder Schrempf <redacted> The MCP2515 can be used with an SPI clock of up to 10 MHz. Set the limit accordingly to prevent any performance issues caused by the really low clock speed of 100 kHz.
Could you share some testing result of this change?
Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")It's really an optimization rather than fix, isn't it? Shawn
quoted hunk ↗ jump to hunk
Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf <redacted> --- arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts index f2c8ccefd1bf..dbf11e03ecce 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts@@ -98,7 +98,7 @@ can0: can@0 { clocks = <&osc_can>; interrupt-parent = <&gpio4>; interrupts = <28 IRQ_TYPE_EDGE_FALLING>; - spi-max-frequency = <100000>; + spi-max-frequency = <10000000>; vdd-supply = <®_vdd_3v3>; xceiver-supply = <®_vdd_5v>; };-- 2.33.0
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