On 4/9/24 6:55 PM, E Shattow wrote:
Original speed class SD cards fail with this change "unable to change mode".
On Tue, Mar 12, 2024 at 4:12 AM Hal Feng hal.feng@starfivetech.com wrote:
On 06.03.24 11:00, Bo Gan wrote:
Previously PLL node was missing from SPL dts. This caused BUS_ROOT to stay on OSC clock (24Mhz). As a result, all peripherals have to run at a much lower frequency, and loading from sdcard/emmc is slow. Thus, enabling PLL node in dts to fix this.
Signed-off-by: Bo Gan ganboing@gmail.com
Reviewed-by: Hal Feng hal.feng@starfivetech.com
The BUS_ROOT clock will have to be switched to PLL2 anyway in U-Boot proper or in Linux, because it's the parent or grandparent clock for *lots* of devices, including PCIe, i2c, spi, qspi... If there's an issue with this change, then I suspect there's something wrong with the dw_mmc driver.
Bo