board: k1: initialize clock and serial devices in SPL

Initialize clock and serial devices in SPL. Otherwise, the device
driver won't be loaded in SPL.

Signed-off-by: Raymond Mao <raymond.mao@riscstar.com>
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Tested-by: Songsong Zhang <sszhang@vsit.ai>

diff --git a/board/spacemit/k1/spl.c b/board/spacemit/k1/spl.c
index e15cf5f1abf24e9f1056c59ef9483eb6c0ba0d13..78f266163473ca65b884e28f49e9c1729f7ab878 100644 (file)
--- a/board/spacemit/k1/spl.c
+++ b/board/spacemit/k1/spl.c
@@ -3,8 +3,45 @@
  * Copyright (c) 2025-2026, RISCstar Ltd.
  */
 
+#include <dm/device.h>
+#include <dm/uclass.h>
+#include <log.h>
 #include <spl.h>
 
+static void clk_early_init(void)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = uclass_get_device_by_name(UCLASS_CLK, "clock-controller@d4090000", &dev);
+       if (ret)
+               panic("Fail to detect clock-controller@d4090000\n");
+       ret = uclass_get_device_by_name(UCLASS_CLK, "system-controller@d4050000", &dev);
+       if (ret)
+               panic("Fail to detect system-controller@d4050000\n");
+       ret = uclass_get_device_by_name(UCLASS_CLK, "system-controller@d4282800", &dev);
+       if (ret)
+               panic("Fail to detect system-controller@d4282800\n");
+       ret = uclass_get_device_by_name(UCLASS_CLK, "system-controller@d4015000", &dev);
+       if (ret)
+               panic("Fail to detect system-controller@d4015000\n");
+
+       if (device_active(dev))
+               log_debug("clk: device is active\n");
+       else
+               log_debug("clk: device not active, probing...\n");
+}
+
+void serial_early_init(void)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = uclass_get_device(UCLASS_SERIAL, 0, &dev);
+       if (ret)
+               panic("Serial uclass init failed: %d\n", ret);
+}
+
 void board_init_f(ulong dummy)
 {
        int ret;
@@ -15,6 +52,8 @@ void board_init_f(ulong dummy)
 
        riscv_cpu_setup();
 
+       clk_early_init();
+       serial_early_init();
        preloader_console_init();
 }