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From: Claudiu Beznea <claudiu.beznea@microchip.com>
To: <ulf.hansson@linaro.org>, <robh+dt@kernel.org>,
	<nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
	<ludovic.desroches@microchip.com>
Cc: <linux-mmc@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <ajay.kathat@microchip.com>,
	Claudiu Beznea <claudiu.beznea@microchip.com>
Subject: [PATCH v2 2/4] mmc: pwrseq: sd8787: add support for wilc1000
Date: Mon, 16 Aug 2021 11:55:28 +0300	[thread overview]
Message-ID: <20210816085530.1723402-3-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <20210816085530.1723402-1-claudiu.beznea@microchip.com>

Add new compatible for wilc1000 devices and specify the delay in .data
member of struct of_device_id. WILC1000, WILC3000 devices needs a minimum
of 5ms delay b/w reset and power lines.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/mmc/core/pwrseq_sd8787.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/core/pwrseq_sd8787.c b/drivers/mmc/core/pwrseq_sd8787.c
index 68a826f1c0a1..264e48067af2 100644
--- a/drivers/mmc/core/pwrseq_sd8787.c
+++ b/drivers/mmc/core/pwrseq_sd8787.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -27,6 +28,7 @@ struct mmc_pwrseq_sd8787 {
 	struct mmc_pwrseq pwrseq;
 	struct gpio_desc *reset_gpio;
 	struct gpio_desc *pwrdn_gpio;
+	u32 reset_pwrdwn_delay_ms;
 };
 
 #define to_pwrseq_sd8787(p) container_of(p, struct mmc_pwrseq_sd8787, pwrseq)
@@ -37,7 +39,7 @@ static void mmc_pwrseq_sd8787_pre_power_on(struct mmc_host *host)
 
 	gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
 
-	msleep(300);
+	msleep(pwrseq->reset_pwrdwn_delay_ms);
 	gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);
 }
 
@@ -55,7 +57,8 @@ static const struct mmc_pwrseq_ops mmc_pwrseq_sd8787_ops = {
 };
 
 static const struct of_device_id mmc_pwrseq_sd8787_of_match[] = {
-	{ .compatible = "mmc-pwrseq-sd8787",},
+	{ .compatible = "mmc-pwrseq-sd8787", .data = (void *)300 },
+	{ .compatible = "mmc-pwrseq-wilc1000", .data = (void *)5 },
 	{/* sentinel */},
 };
 MODULE_DEVICE_TABLE(of, mmc_pwrseq_sd8787_of_match);
@@ -64,11 +67,15 @@ static int mmc_pwrseq_sd8787_probe(struct platform_device *pdev)
 {
 	struct mmc_pwrseq_sd8787 *pwrseq;
 	struct device *dev = &pdev->dev;
+	const struct of_device_id *match;
 
 	pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);
 	if (!pwrseq)
 		return -ENOMEM;
 
+	match = of_match_node(mmc_pwrseq_sd8787_of_match, pdev->dev.of_node);
+	pwrseq->reset_pwrdwn_delay_ms = (u32)match->data;
+
 	pwrseq->pwrdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
 	if (IS_ERR(pwrseq->pwrdn_gpio))
 		return PTR_ERR(pwrseq->pwrdn_gpio);
-- 
2.25.1


  parent reply	other threads:[~2021-08-16  8:57 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-16  8:55 [PATCH v2 0/4] mmc: pwrseq: sd8787: add support wilc1000 devices Claudiu Beznea
2021-08-16  8:55 ` [PATCH v2 1/4] dt-bindings: pwrseq-sd8787: add binding for wilc1000 Claudiu Beznea
2021-08-16 20:07   ` Rob Herring
2021-08-16  8:55 ` Claudiu Beznea [this message]
2021-08-16  8:55 ` [PATCH v2 3/4] mmc: pwrseq: add wilc1000_sdio dependency for pwrseq_sd8787 Claudiu Beznea
2021-08-16  8:55 ` [PATCH v2 4/4] ARM: dts: at91: sama5d27_wlsom1: add wifi device Claudiu Beznea

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