rpi: copy over uart clock-frequency in DT

rpi5 firmware sets uart_clk clock-frequency in
the firmware and patches it to the DT, copy it
over when loading a new DT.

Signed-off-by: Bruno Leite <brule@prevas.dk>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>

diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index 6ecd3eb..049904b 100644 (file)
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -602,6 +602,9 @@ void  update_fdt_from_fw(void *fdt, void *fw_fdt)
 
        /* Bluetooth device address as provided by the firmware */
        copy_property(fdt, fw_fdt, "/soc/serial@7e201000/bluetooth", "local-bd-address");
+
+       /* copy uart clk as provided by the firmware */
+       copy_property(fdt, fw_fdt, "/clocks/clk-uart", "clock-frequency");
 }
 
 int ft_board_setup(void *blob, struct bd_info *bd)