From: Dmitry Rokosov <ddrokosov@salutedevices.com>
To: <lee@kernel.org>, <pavel@ucw.cz>, <robh+dt@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>,
<andy.shevchenko@gmail.com>
Cc: <kernel@sberdevices.ru>, <rockosov@gmail.com>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-leds@vger.kernel.org>,
George Stark <gnstark@salutedevices.com>,
Dmitry Rokosov <ddrokosov@salutedevices.com>
Subject: [PATCH v3 06/11] leds: aw200xx: add delay after software reset
Date: Wed, 1 Nov 2023 17:24:40 +0300 [thread overview]
Message-ID: <20231101142445.8753-7-ddrokosov@salutedevices.com> (raw)
In-Reply-To: <20231101142445.8753-1-ddrokosov@salutedevices.com>
From: George Stark <gnstark@salutedevices.com>
According to datasheets of aw200xx devices software reset takes at
least 1ms so add delay after reset before issuing commands to device.
Signed-off-by: George Stark <gnstark@salutedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
---
drivers/leds/leds-aw200xx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c
index aab8898b0330..ae3b4a96c52c 100644
--- a/drivers/leds/leds-aw200xx.c
+++ b/drivers/leds/leds-aw200xx.c
@@ -321,6 +321,9 @@ static int aw200xx_chip_reset(const struct aw200xx *const chip)
if (ret)
return ret;
+ /* according to datasheet software reset takes at least 1ms */
+ fsleep(1000);
+
regcache_mark_dirty(chip->regmap);
return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR);
}
--
2.36.0
next prev parent reply other threads:[~2023-11-01 14:25 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 14:24 [PATCH v3 00/11] leds: aw200xx: several driver updates Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 01/11] leds: aw200xx: fix write to DIM parameter Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 02/11] leds: aw200xx: support HWEN hardware control Dmitry Rokosov
2023-11-01 14:31 ` Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 03/11] dt-bindings: leds: aw200xx: introduce optional enable-gpios property Dmitry Rokosov
2023-11-06 14:53 ` Rob Herring
2023-11-01 14:24 ` [PATCH v3 04/11] leds: aw200xx: calculate dts property display_rows in the driver Dmitry Rokosov
2023-11-18 16:46 ` Andy Shevchenko
2023-11-01 14:24 ` [PATCH v3 05/11] dt-bindings: leds: aw200xx: remove property "awinic,display-rows" Dmitry Rokosov
2023-11-01 14:24 ` Dmitry Rokosov [this message]
2023-11-01 14:24 ` [PATCH v3 07/11] leds: aw200xx: enable disable_locking flag in regmap config Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 08/11] leds: aw200xx: improve autodim calculation method Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 09/11] leds: aw200xx: add support for aw20108 device Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 10/11] dt-bindings: leds: awinic,aw200xx: add AW20108 device Dmitry Rokosov
2023-11-01 14:24 ` [PATCH v3 11/11] dt-bindings: leds: aw200xx: fix led pattern and add reg constraints Dmitry Rokosov
2023-11-01 15:31 ` Conor Dooley
2023-11-01 17:48 ` Dmitry Rokosov
2023-11-01 16:04 ` Rob Herring
2023-11-01 16:17 ` Conor Dooley
2023-11-01 17:44 ` Dmitry Rokosov
2023-11-02 0:17 ` Conor Dooley
2023-11-18 16:57 ` [PATCH v3 00/11] leds: aw200xx: several driver updates Andy Shevchenko
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