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From: Linus Walleij <linus.walleij@linaro.org>
To: Aaro Koskinen <aaro.koskinen@iki.fi>,
	Janusz Krzysztofik <jmkrzyszt@gmail.com>,
	Tony Lindgren <tony@atomide.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Ben Dooks <ben.dooks@codethink.co.uk>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
	devicetree@vger.kernel.org, linux-mips@vger.kernel.org,
	Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 5/6] mtd: rawnand: gpio: Support standard nand width
Date: Wed, 08 Nov 2023 15:33:53 +0100	[thread overview]
Message-ID: <20231108-fix-mips-nand-v1-5-5fc5586d04de@linaro.org> (raw)
In-Reply-To: <20231108-fix-mips-nand-v1-0-5fc5586d04de@linaro.org>

The standard property for describing the band width of a NAND
memory is "nand-bus-width" not "bank-width". The new bindings
support both so make Linux check both in priority order.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/mtd/nand/raw/gpio.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c
index 5553101c709c..d5bd245b0c0d 100644
--- a/drivers/mtd/nand/raw/gpio.c
+++ b/drivers/mtd/nand/raw/gpio.c
@@ -183,7 +183,15 @@ static int gpio_nand_get_config(struct device *dev,
 {
 	u32 val;
 
-	if (!device_property_read_u32(dev, "bank-width", &val)) {
+	/* The preferred binding takes precedence */
+	if (!device_property_read_u32(dev, "nand-bus-width", &val)) {
+		if (val == 16) {
+			chip->options |= NAND_BUSWIDTH_16;
+		} else if (val != 8) {
+			dev_err(dev, "invalid nand-bus-width %u\n", val);
+			return -EINVAL;
+		}
+	} else if (!device_property_read_u32(dev, "bank-width", &val)) {
 		if (val == 2) {
 			chip->options |= NAND_BUSWIDTH_16;
 		} else if (val != 1) {

-- 
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Linus Walleij <linus.walleij@linaro.org>
To: Aaro Koskinen <aaro.koskinen@iki.fi>,
	 Janusz Krzysztofik <jmkrzyszt@gmail.com>,
	Tony Lindgren <tony@atomide.com>,
	 Miquel Raynal <miquel.raynal@bootlin.com>,
	 Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	 Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	 Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	 Ben Dooks <ben.dooks@codethink.co.uk>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	 linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
	 devicetree@vger.kernel.org, linux-mips@vger.kernel.org,
	 Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 5/6] mtd: rawnand: gpio: Support standard nand width
Date: Wed, 08 Nov 2023 15:33:53 +0100	[thread overview]
Message-ID: <20231108-fix-mips-nand-v1-5-5fc5586d04de@linaro.org> (raw)
In-Reply-To: <20231108-fix-mips-nand-v1-0-5fc5586d04de@linaro.org>

The standard property for describing the band width of a NAND
memory is "nand-bus-width" not "bank-width". The new bindings
support both so make Linux check both in priority order.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/mtd/nand/raw/gpio.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c
index 5553101c709c..d5bd245b0c0d 100644
--- a/drivers/mtd/nand/raw/gpio.c
+++ b/drivers/mtd/nand/raw/gpio.c
@@ -183,7 +183,15 @@ static int gpio_nand_get_config(struct device *dev,
 {
 	u32 val;
 
-	if (!device_property_read_u32(dev, "bank-width", &val)) {
+	/* The preferred binding takes precedence */
+	if (!device_property_read_u32(dev, "nand-bus-width", &val)) {
+		if (val == 16) {
+			chip->options |= NAND_BUSWIDTH_16;
+		} else if (val != 8) {
+			dev_err(dev, "invalid nand-bus-width %u\n", val);
+			return -EINVAL;
+		}
+	} else if (!device_property_read_u32(dev, "bank-width", &val)) {
 		if (val == 2) {
 			chip->options |= NAND_BUSWIDTH_16;
 		} else if (val != 1) {

-- 
2.34.1


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID (diff)
From: Linus Walleij <linus.walleij@linaro.org>
To: Aaro Koskinen <aaro.koskinen@iki.fi>,
	 Janusz Krzysztofik <jmkrzyszt@gmail.com>,
	Tony Lindgren <tony@atomide.com>,
	 Miquel Raynal <miquel.raynal@bootlin.com>,
	 Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	 Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	 Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	 Ben Dooks <ben.dooks@codethink.co.uk>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	 linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
	 devicetree@vger.kernel.org, linux-mips@vger.kernel.org,
	 Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 5/6] mtd: rawnand: gpio: Support standard nand width
Date: Wed, 08 Nov 2023 15:33:53 +0100	[thread overview]
Message-ID: <20231108-fix-mips-nand-v1-5-5fc5586d04de@linaro.org> (raw)
In-Reply-To: <20231108-fix-mips-nand-v1-0-5fc5586d04de@linaro.org>

The standard property for describing the band width of a NAND
memory is "nand-bus-width" not "bank-width". The new bindings
support both so make Linux check both in priority order.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/mtd/nand/raw/gpio.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c
index 5553101c709c..d5bd245b0c0d 100644
--- a/drivers/mtd/nand/raw/gpio.c
+++ b/drivers/mtd/nand/raw/gpio.c
@@ -183,7 +183,15 @@ static int gpio_nand_get_config(struct device *dev,
 {
 	u32 val;
 
-	if (!device_property_read_u32(dev, "bank-width", &val)) {
+	/* The preferred binding takes precedence */
+	if (!device_property_read_u32(dev, "nand-bus-width", &val)) {
+		if (val == 16) {
+			chip->options |= NAND_BUSWIDTH_16;
+		} else if (val != 8) {
+			dev_err(dev, "invalid nand-bus-width %u\n", val);
+			return -EINVAL;
+		}
+	} else if (!device_property_read_u32(dev, "bank-width", &val)) {
 		if (val == 2) {
 			chip->options |= NAND_BUSWIDTH_16;
 		} else if (val != 1) {

-- 
2.34.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2023-11-08 14:34 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-08 14:33 [PATCH 0/6] Fix polarity and bindings for GPIO-based NAND drivers Linus Walleij
2023-11-08 14:33 ` Linus Walleij
2023-11-08 14:33 ` Linus Walleij
2023-11-08 14:33 ` [PATCH 1/6] mtd: rawnand: ams-delta/gpio: Unify polarity Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33 ` [PATCH 2/6] dt-bindings: mtd: Rewrite gpio-control-nand in schema Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 16:22   ` Miquel Raynal
2023-11-08 16:22     ` Miquel Raynal
2023-11-08 16:22     ` Miquel Raynal
2023-11-08 19:11   ` Rob Herring
2023-11-08 19:11     ` Rob Herring
2023-11-08 19:11     ` Rob Herring
2023-11-08 21:45     ` Linus Walleij
2023-11-08 21:45       ` Linus Walleij
2023-11-08 21:45       ` Linus Walleij
2023-11-08 14:33 ` [PATCH 3/6] MIPS: NI 169445: Fix NAND GPIOs Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33 ` [PATCH 4/6] mtd: rawnand: gpio: Use device properties Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 15:53   ` Miquel Raynal
2023-11-08 15:53     ` Miquel Raynal
2023-11-08 15:53     ` Miquel Raynal
2023-11-08 14:33 ` Linus Walleij [this message]
2023-11-08 14:33   ` [PATCH 5/6] mtd: rawnand: gpio: Support standard nand width Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 15:56   ` Miquel Raynal
2023-11-08 15:56     ` Miquel Raynal
2023-11-08 15:56     ` Miquel Raynal
2023-11-08 14:33 ` [PATCH 6/6] mtd: rawnand: gpio: Rename file Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 14:33   ` Linus Walleij
2023-11-08 15:59   ` Miquel Raynal
2023-11-08 15:59     ` Miquel Raynal
2023-11-08 15:59     ` Miquel Raynal

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