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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Peng Fan Introduce optional vcc-supply property, SPI NOR flashes needs power supply to work properly. The power supply maybe software controlable per board design. Acked-by: Rob Herring (Arm) Signed-off-by: Peng Fan --- Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml index 6e3afb42926ea6d22f0dd2ebf39752e115502615..335f8204aa1ebce3d2b4686b2a06d0ea3791667c 100644 --- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml +++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml @@ -96,6 +96,10 @@ properties: If "broken-flash-reset" is present then having this property does not make any difference. + vcc-supply: + description: + Supply for the SPI NOR power. + spi-cpol: true spi-cpha: true From patchwork Sun Oct 27 12:16:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Peng Fan (OSS)" X-Patchwork-Id: 13852515 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B24C0D116E8 for ; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Peng Fan SPI NOR flashes needs power supply to work properly. The power supply maybe software controllable per board design. So add the support for an vcc-supply regulator. Signed-off-by: Peng Fan --- drivers/mtd/spi-nor/core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index b6f374ded390a0c0429a61dd0579204e0e98bfa1..d95427c4f4d0839c5df348eeddea59582ef99d9d 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -3465,6 +3466,10 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, if (!nor->bouncebuf) return -ENOMEM; + ret = devm_regulator_get_enable(dev, "vcc"); + if (ret) + return ret; + ret = spi_nor_hw_reset(nor); if (ret) return ret;