Hi Patrick
On 6/29/21 12:04 PM, Patrick Delaunay wrote:
> 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 <patrick.delau...@foss.st.com>
> ---
>
> 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,
> };
>
Reviewed-by: Patrice Chotard <patrice.chot...@foss.st.com>
Thanks
