Re: [PATCH] arm64: dts: qcom: qcs6490-rb3gen2: Increase MCP2518FD SPI frequency to 17MHz
Konrad Dybcio <[email protected]>
| Newsgroups | org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On 8/10/26 8:30 PM, Viken Dadhaniya wrote: > The MCP2518FD CAN controller is limited to 14MHz because higher SPI > frequencies are unreliable with the current SPI3 pin drive strength. > > Set the SPI3 data, clock and chip-select lines to 8mA drive strength and > raise spi-max-frequency to 17MHz, the maximum allowed by the MCP2518FD > errata: > > 0.85 * Fosc / 2 = 0.85 * 40MHz / 2 = 17MHz > > Signed-off-by: Viken Dadhaniya <[email protected]> > --- Reviewed-by: Konrad Dybcio <[email protected]> Konrad