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

[Thomas Bonnefille]

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.

Thomas