[PATCH] dm: core: Switch order of pinctrl and power domain calls

[PATCH] dm: core: Switch order of pinctrl and power domain calls

[Michal Simek]

The commit 3ad307784847 ("dm: core: device: enable power domain in probe")
introduced enabling power domain when device is probed.
By checking this sequence in Linux kernel was found that power domain is
handled first followed by pinctrl setting.

This patch is switching this order to follow Linux kernel that power
domains are handled first follow by pinctrl setting.

The issue was found on Xilinx Kria SOM where firmware is blocking setting
up pin configuration/muxes without enabling power domain for the specific
IP first.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

 drivers/core/device.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/core/device.c b/drivers/core/device.c
index efd07176e374..101ad8a22b37 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -518,6 +518,14 @@ int device_probe(struct udevice *dev)
 
 	dev_or_flags(dev, DM_FLAG_ACTIVATED);
 
+	if (CONFIG_IS_ENABLED(POWER_DOMAIN) && dev->parent &&
+	    (device_get_uclass_id(dev) != UCLASS_POWER_DOMAIN) &&
+	    !(drv->flags & DM_FLAG_DEFAULT_PD_CTRL_OFF)) {
+		ret = dev_power_domain_on(dev);
+		if (ret)
+			goto fail;
+	}
+
 	/*
 	 * Process pinctrl for everything except the root device, and
 	 * continue regardless of the result of pinctrl. Don't process pinctrl
@@ -536,14 +544,6 @@ int device_probe(struct udevice *dev)
 	if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL)
 		pinctrl_select_state(dev, "default");
 
-	if (CONFIG_IS_ENABLED(POWER_DOMAIN) && dev->parent &&
-	    (device_get_uclass_id(dev) != UCLASS_POWER_DOMAIN) &&
-	    !(drv->flags & DM_FLAG_DEFAULT_PD_CTRL_OFF)) {
-		ret = dev_power_domain_on(dev);
-		if (ret)
-			goto fail;
-	}
-
 	if (CONFIG_IS_ENABLED(IOMMU) && dev->parent &&
 	    (device_get_uclass_id(dev) != UCLASS_IOMMU)) {
 		ret = dev_iommu_enable(dev);
-- 
2.34.1

Re: [PATCH] dm: core: Switch order of pinctrl and power domain calls

[Simon Glass]

On Fri, 7 Jan 2022 at 08:38, Michal Simek <michal.simek@xilinx.com> wrote:
>
> The commit 3ad307784847 ("dm: core: device: enable power domain in probe")
> introduced enabling power domain when device is probed.
> By checking this sequence in Linux kernel was found that power domain is
> handled first followed by pinctrl setting.
>
> This patch is switching this order to follow Linux kernel that power
> domains are handled first follow by pinctrl setting.
>
> The issue was found on Xilinx Kria SOM where firmware is blocking setting
> up pin configuration/muxes without enabling power domain for the specific
> IP first.
>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
>
>  drivers/core/device.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH] dm: core: Switch order of pinctrl and power domain calls

[Simon Glass]

On Fri, 7 Jan 2022 at 08:38, Michal Simek <michal.simek@xilinx.com> wrote:
>
> The commit 3ad307784847 ("dm: core: device: enable power domain in probe")
> introduced enabling power domain when device is probed.
> By checking this sequence in Linux kernel was found that power domain is
> handled first followed by pinctrl setting.
>
> This patch is switching this order to follow Linux kernel that power
> domains are handled first follow by pinctrl setting.
>
> The issue was found on Xilinx Kria SOM where firmware is blocking setting
> up pin configuration/muxes without enabling power domain for the specific
> IP first.
>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
>
>  drivers/core/device.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

Applied to u-boot-dm, thanks!