Re: [PATCH RFC v2 4/4] riscv: dts: thead: Add clock to TH1520 mmc controllers

[Drew Fustini]

On Thu, May 02, 2024 at 09:47:43AM +0200, Thomas Bonnefille wrote:
> 
> 
> On 4/27/24 2:10 AM, Drew Fustini wrote:
> > Change the clock property in the T-Head TH1520 mmc controller nodes to a
> > real clock provided by the AP_SUBSYS clock driver.
> > 
> > Signed-off-by: Drew Fustini <dfustini@xxxxxxxxxxxxxxx>
> 
> I experienced that, when the I2C clocks were correctly configured, the UART
> stopped working, likely due to their dependence on FOUTPOSTDIV.
> Setting up the UART correctly, for instance:
> 
>                 uartx: serial@xxxxxxxxxx {
> 			...
>                         clocks = <&clk CLK_UART_SCLK>, <&clk
> CLK_UARTX_PCLK>;
>                         clock-names = "baudclk", "apb_pclk";
>                         ...
> 			status = "disabled";
>                 };
> resolved the issue.
> As this would be mandatory in the future, I suggest that you configure all
> the nodes currently set to a fixed clock, not just the MMC controller.

Thank you for testing and discovering this issue.

Could you post your device tree so I can be sure I'm testing the same as
what you have?

Drew