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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Haibo Chen <haibo.chen@nxp.com>,
	Fabio Estevam <festevam@gmail.com>, Yangbo Lu <yangbo.lu@nxp.com>,
	linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	Mark Brown <broonie@kernel.org>
Subject: [PATCH v1 3/6] mmc: mmc_spi: Set up polling even if voltage-ranges is not present
Date: Mon, 19 Apr 2021 14:24:56 +0300
Message-ID: <20210419112459.25241-3-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20210419112459.25241-1-andriy.shevchenko@linux.intel.com>

When voltage-ranges property is not present the driver assumes that
it is 3.3v (3.2v..3.4v). But at the same time it disallows polling.

Fix that by dropping the comparison to 0 when no property is provided.

While at it, mark voltage-ranges property optional as it was initially.

Fixes: 9c43df57910b ("mmc_spi: Add support for OpenFirmware bindings")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt | 6 +++---
 drivers/mmc/host/of_mmc_spi.c                          | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt
index 75486cca8054..5e74db69f581 100644
--- a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt
@@ -5,11 +5,11 @@ by mmc.txt and the properties used by the mmc_spi driver.
 
 Required properties:
 - spi-max-frequency : maximum frequency for this device (Hz).
-- voltage-ranges : two cells are required, first cell specifies minimum
-  slot voltage (mV), second cell specifies maximum slot voltage (mV).
-  Several ranges could be specified.
 
 Optional properties:
+- voltage-ranges : two cells are required, first cell specifies minimum
+  slot voltage (mV), second cell specifies maximum slot voltage (mV).
+  Several ranges could be specified. If not provided, 3.2v..3.4v is assumed.
 - gpios : may specify GPIOs in this order: Card-Detect GPIO,
   Write-Protect GPIO. Note that this does not follow the
   binding from mmc.txt, for historical reasons.
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index acd96ea399b8..843ec3db891b 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -66,7 +66,7 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
 	if (!oms)
 		return NULL;
 
-	if (mmc_of_parse_voltage(mmc, &oms->pdata.ocr_mask) <= 0)
+	if (mmc_of_parse_voltage(mmc, &oms->pdata.ocr_mask) < 0)
 		goto err_ocr;
 
 	oms->detect_irq = irq_of_parse_and_map(np, 0);
-- 
2.30.2


  parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-19 11:24 [PATCH v1 1/6] mmc: core: Correct descriptions in mmc_of_parse() Andy Shevchenko
2021-04-19 11:24 ` [PATCH v1 2/6] mmc: core: Convert mmc_of_parse_voltage() to use device property API Andy Shevchenko
2021-04-19 11:24 ` Andy Shevchenko [this message]
2021-04-19 11:24 ` [PATCH v1 4/6] mmc: mmc_spi: Drop unused NO_IRQ definition Andy Shevchenko
2021-04-19 11:24 ` [PATCH v1 5/6] mmc: mmc_spi: Use already parsed IRQ Andy Shevchenko
2021-04-19 11:24 ` [PATCH v1 6/6] mmc: mmc_spi: Make of_mmc_spi.c resource provider agnostic Andy Shevchenko
2021-04-19 12:59 ` [PATCH v1 1/6] mmc: core: Correct descriptions in mmc_of_parse() Ulf Hansson

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