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From: Judith Mendez <jm@ti.com>
To: Judith Mendez <jm@ti.com>, Ulf Hansson <ulf.hansson@linaro.org>,
	Nishanth Menon <nm@ti.com>,
	Adrian Hunter <adrian.hunter@intel.com>
Cc: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tero Kristo <kristo@kernel.org>,
	Josua Mayer <josua@solid-run.com>, <linux-mmc@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Francesco Dolcini <francesco@dolcini.it>,
	Hiago De Franco <hiagofranco@gmail.com>,
	Moteen Shah <m-shah@ti.com>, <stable@vger.kernel.org>
Subject: [PATCH RESEND v3 0/3] Add ti,suppress-v1p8-ena
Date: Tue, 22 Apr 2025 17:05:09 -0500	[thread overview]
Message-ID: <20250422220512.297396-1-jm@ti.com> (raw)

Resend patch series to fix cc list

There are MMC boot failures seen with V1P8_SIGNAL_ENA on Kingston eMMC
and Microcenter/Patriot SD cards on Sitara K3 boards due to the HS200
initialization sequence involving V1P8_SIGNAL_ENA. Since V1P8_SIGNAL_ENA
is optional for eMMC, do not set V1P8_SIGNAL_ENA by default for eMMC.
For SD cards we shall parse DT for ti,suppress-v1p8-ena property to
determine whether to suppress V1P8_SIGNAL_ENA. Add new ti,suppress-v1p8-ena
to am62x, am62ax, and am62px SoC dtsi files since there is no internal LDO
tied to sdhci1 interface so V1P8_SIGNAL_ENA only affects timing.

This fix was previously merged in the kernel, but was reverted due
to the "heuristics for enabling the quirk"[0]. This issue is adressed
in this patch series by adding optional ti,suppress-v1p8-ena DT property
which determines whether to apply the quirk for SD.

Changes since v2:
- Include patch 3/3
- Reword cover letter
- Reword binding patch description
- Add fixes/cc tags to driver patch
- Reorder patches according to binding patch first
- Resend to fix cc list in original v3 series

Link to v2:
https://lore.kernel.org/linux-mmc/20250417182652.3521104-1-jm@ti.com/
Link to v1:
https://lore.kernel.org/linux-mmc/20250407222702.2199047-1-jm@ti.com/

[0] https://lore.kernel.org/linux-mmc/20250127-am654-mmc-regression-v2-1-9bb39fb12810@solid-run.com/

Judith Mendez (3):
  dt-bindings: mmc: sdhci-am654: Add ti,suppress-v1p8-ena
  mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch
  arm64: dts: ti: k3-am62*: add ti,suppress-v1p8-ena

 .../devicetree/bindings/mmc/sdhci-am654.yaml  |  5 +++
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi      |  1 +
 arch/arm64/boot/dts/ti/k3-am62a-main.dtsi     |  1 +
 .../dts/ti/k3-am62p-j722s-common-main.dtsi    |  1 +
 drivers/mmc/host/sdhci_am654.c                | 32 +++++++++++++++++++
 5 files changed, 40 insertions(+)


base-commit: 1be38f81251f6d276713c259ecf4414f82f22c29
-- 
2.49.0



             reply	other threads:[~2025-04-22 22:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-22 22:05 Judith Mendez [this message]
2025-04-22 22:05 ` [PATCH RESEND v3 1/3] dt-bindings: mmc: sdhci-am654: Add ti,suppress-v1p8-ena Judith Mendez
2025-04-25  7:48   ` Krzysztof Kozlowski
2025-04-25 14:19     ` Judith Mendez
2025-04-22 22:05 ` [PATCH RESEND v3 2/3] mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch Judith Mendez
2025-04-22 22:05 ` [PATCH RESEND v3 3/3] arm64: dts: ti: k3-am62*: add ti,suppress-v1p8-ena Judith Mendez
2025-04-23 18:08 ` [PATCH RESEND v3 0/3] Add ti,suppress-v1p8-ena Nishanth Menon
2025-04-23 22:27   ` Judith Mendez

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