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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Ulf Hansson <ulf.hansson@oss.qualcomm.com>,
	linux-mmc@vger.kernel.org, Ulf Hansson <ulfh@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
	Kamal Dasu <kamal.dasu@broadcom.com>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Oleksij Rempel <o.rempel@pengutronix.de>,
	linux-kernel@vger.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Subject: Re: [PATCH v10 2/6] dt-bindings: mmc: Add reset-card-at-resume property
Date: Tue, 27 Oct 2026 16:33:22 +0100	[thread overview]
Message-ID: <2a29cb8e-28eb-450a-afe9-df543f99b101@kernel.org> (raw)
In-Reply-To: <20261027144051.249211-3-ulf.hansson@oss.qualcomm.com>

On 27/10/2026 15:40, Ulf Hansson wrote:
> From: Kamal Dasu <kamal.dasu@broadcom.com>
> 
> On some platforms, firmware or other hardware accesses the card
> during suspend/resume, before the kernel's own resume path has run,
> leaving the card in a state the kernel can no longer assume it knows.
> Add a flag property so such boards can tell the mmc core the card
> needs to be reset before it can be used again.
> 
> This is expected to be paired with keep-power-in-suspend on boards
> whose firmware needs the card to stay powered and live throughout
> suspend: since the card is never power-cycled, nothing else would
> force it back to a known state on resume.
> 
> Signed-off-by: Kamal Dasu <kamal.dasu@broadcom.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Incomplete DCO, missing DT list, so not checked by automation.


Please kindly resend and include all necessary To/Cc entries.

Best regards,
Krzysztof

  reply	other threads:[~2026-10-27 15:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-27 14:40 [PATCH v10 0/6] mmc: core: Keep the card powered across suspend when firmware needs it live Ulf Hansson
2026-10-27 14:40 ` [PATCH v10 1/6] dt-bindings: mmc: Extend keep-power-in-suspend beyond SDIO Ulf Hansson
2026-10-27 15:01   ` Shawn Lin
2026-10-27 19:46     ` Ulf Hansson
2026-10-28  0:36       ` Shawn Lin
2026-10-27 15:33   ` Krzysztof Kozlowski
2026-10-27 19:48     ` Ulf Hansson
2026-10-27 20:31       ` Kamal Dasu
2026-10-27 14:40 ` [PATCH v10 2/6] dt-bindings: mmc: Add reset-card-at-resume property Ulf Hansson
2026-10-27 15:33   ` Krzysztof Kozlowski [this message]
2026-10-27 14:40 ` [PATCH v10 3/6] mmc: core: Add option to keep an eMMC powered on at system suspend Ulf Hansson
2026-10-27 15:19   ` Shawn Lin
2026-10-27 14:40 ` [PATCH v10 4/6] mmc: core: Split sdio_set_host_pm_flags() Ulf Hansson
2026-10-27 15:12   ` Shawn Lin
2026-10-27 19:43     ` Ulf Hansson
2026-10-27 14:40 ` [PATCH v10 5/6] mmc: core: Move reset functions for eMMC Ulf Hansson
2026-10-27 15:19   ` Shawn Lin
2026-10-27 14:40 ` [PATCH v10 6/6] mmc: core: Add support for resetting an eMMC at system resume Ulf Hansson
2026-10-27 15:20   ` Shawn Lin
2026-10-27 20:00     ` Kamal Dasu
2026-10-27 19:53 ` [PATCH v10 0/6] mmc: core: Keep the card powered across suspend when firmware needs it live Kamal Dasu
2026-10-28  9:35   ` Ulf Hansson

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