[PATCH] ARM: dts: samsung: exynos4412-p4note: allow powering off the wifi card

[PATCH] ARM: dts: samsung: exynos4412-p4note: allow powering off the wifi card

[thesame-personal]

sdhci_3 serving BCM4334 was missing cap-power-off-card.
On my N8000 this resulted in the following messages after sleeping:
[305.759883] PM: suspend entry (deep)
[306.514698] brcmfmac: brcmf_ops_sdio_suspend: Failed to set pm_flags 1
[306.671504] brcmfmac: brcmf_sdio_htclk: HT Avail request error: -110
[307.127267] PM: suspend exit

The regression was triggered by commit 8c3170628a9c
("wifi: brcmfmac: keep power during suspend if board requires it").
Midas already has a fix in commit 2ff147fdfa99
("ARM: dts: samsung: exynos4412-midas:
turn off SDIO WLAN chip during system suspend").
exynos4412-p4note.dtsi does not include exynos4412-midas.dtsi,
so p4note did not automatically inherit the Midas fix.

Another affected board was fixed in commit 863d69923bdb ("ARM: dts:
samsung: exynos4210-i9100: turn off SDIO WLAN chip during system
suspend").

Signed-off-by: Artem Utkin <thesame.personal@gmail.com>
---
 arch/arm/boot/dts/samsung/exynos4412-p4note.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/samsung/exynos4412-p4note.dtsi b/arch/arm/boot/dts/samsung/exynos4412-p4note.dtsi
index 8d52aa13b8..03b514a82b 100644
--- a/arch/arm/boot/dts/samsung/exynos4412-p4note.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos4412-p4note.dtsi
@@ -1232,6 +1232,7 @@ &sdhci_3 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	non-removable;
+	cap-power-off-card;
 	bus-width = <4>;
 	mmc-pwrseq = <&wlan_pwrseq>;
 

---
base-commit: b47faa6004d86ade16b90d24fa1e1f179e6f7230
change-id: 20261024-exynos4412-p4note-brcmfmac-68e7c13354bf

Best regards,
--  
Artem Utkin <thesame.personal@gmail.com>

Re: [PATCH] ARM: dts: samsung: exynos4412-p4note: allow powering off the wifi card

[Krzysztof Kozlowski]

On 24/10/2026 22:48, thesame-personal wrote:
> sdhci_3 serving BCM4334 was missing cap-power-off-card.
> On my N8000 this resulted in the following messages after sleeping:
> [305.759883] PM: suspend entry (deep)
> [306.514698] brcmfmac: brcmf_ops_sdio_suspend: Failed to set pm_flags 1
> [306.671504] brcmfmac: brcmf_sdio_htclk: HT Avail request error: -110
> [307.127267] PM: suspend exit
> 
> The regression was triggered by commit 8c3170628a9c
> ("wifi: brcmfmac: keep power during suspend if board requires it").
> Midas already has a fix in commit 2ff147fdfa99
> ("ARM: dts: samsung: exynos4412-midas:
> turn off SDIO WLAN chip during system suspend").
> exynos4412-p4note.dtsi does not include exynos4412-midas.dtsi,
> so p4note did not automatically inherit the Midas fix.
> 
> Another affected board was fixed in commit 863d69923bdb ("ARM: dts:
> samsung: exynos4210-i9100: turn off SDIO WLAN chip during system
> suspend").

Drop paragraph, not needed here.

> 

Please add Fixed tax and Cc-stable.

> Signed-off-by: Artem Utkin <thesame.personal@gmail.com>

Does not match From.

Best regards,
Krzysztof