[PATCH 2/2] stm32mp: syscon: manage clock when present in device tree
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STALE1922d
From: Patrick Delaunay <hidden>
Date: 2021-06-29 10:04:42
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Enable the clocks during syscon probe when they are present in device tree. This patch avoids a freeze when the SYSCFG clock is not enabled by TF-A / OP-TEE. Signed-off-by: Patrick Delaunay <redacted> --- arch/arm/mach-stm32mp/syscon.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c
index 3e61ce4097..a0e8e1dfdc 100644
--- a/arch/arm/mach-stm32mp/syscon.c
+++ b/arch/arm/mach-stm32mp/syscon.c@@ -4,6 +4,7 @@ */ #include <common.h> +#include <clk.h> #include <dm.h> #include <syscon.h> #include <asm/arch/stm32.h>
@@ -14,9 +15,22 @@ static const struct udevice_id stm32mp_syscon_ids[] = { { } }; +static int stm32mp_syscon_probe(struct udevice *dev) +{ + struct clk_bulk clk_bulk; + int ret; + + ret = clk_get_bulk(dev, &clk_bulk); + if (!ret) + clk_enable_bulk(&clk_bulk); + + return 0; +} + U_BOOT_DRIVER(syscon_stm32mp) = { .name = "stmp32mp_syscon", .id = UCLASS_SYSCON, .of_match = stm32mp_syscon_ids, .bind = dm_scan_fdt_dev, + .probe = stm32mp_syscon_probe, };
--
2.25.1