arm: mach-k3: j721e_init: Force early probe of clk-k3 driver

Force the clk-k3 driver to probe early during R5 SPL boot to ensure the
default system clock configuration is completed. Many other drivers
assume a default state of the clock tree and it is currently possible
for them to probe before clk-k3 depending on the exact system
configuration.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Reported-by: Keerthy <j-keerthy@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>

diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 76a04a9..e9e076c 100644 (file)
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -180,6 +180,18 @@ void board_init_f(ulong dummy)
        k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata),
                        k3_mmc_stop_clock, k3_mmc_restart_clock);
 
+       /*
+        * Force probe of clk_k3 driver here to ensure basic default clock
+        * configuration is always done.
+        */
+       if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
+               ret = uclass_get_device_by_driver(UCLASS_CLK,
+                                                 DM_DRIVER_GET(ti_clk),
+                                                 &dev);
+               if (ret)
+                       panic("Failed to initialize clk-k3!\n");
+       }
+
        /* Prepare console output */
        preloader_console_init();