From: Dave Gerlach <d-gerlach@ti.com>
Date: Fri, 11 Jun 2021 08:45:23 +0000 (+0300)
Subject: arm: mach-k3: j721e_init: Force early probe of clk-k3 driver
X-Git-Tag: v2021.10~124^2~12^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=61305e00c704aa3c4ccf73598074ada4e55185fd;p=platform%2Fkernel%2Fu-boot.git

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
--- 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();