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From: Junjie Cao <junjie.cao@linux.dev>
To: Lee Jones <lee@kernel.org>, Daniel Thompson <danielt@kernel.org>,
	Jingoo Han <jingoohan1@gmail.com>
Cc: dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	caojunjie650@gmail.com, junjie.cao@linux.dev,
	Pengyu Luo <mitltlatltl@gmail.com>
Subject: [PATCH 1/2] backlight: aw99706: Fix DT property names to match binding
Date: Wed,  1 Jul 2026 21:39:17 +0800	[thread overview]
Message-ID: <20260701133918.33487-1-junjie.cao@linux.dev> (raw)

The driver reads four tuning properties without the unit suffixes that
the binding mandates: "awinic,sw-freq" instead of "awinic,sw-freq-hz",
"awinic,sw-ilmt" instead of "awinic,sw-ilmt-microamp", "awinic,iled-max"
instead of "awinic,iled-max-microamp", and "awinic,uvlo-thres" instead
of "awinic,uvlo-thres-microvolt".

As a result, device_property_read_u32() never finds these properties in
a binding-conformant device tree and silently falls back to the compiled-in
defaults for switching frequency, switching current limit, max LED current,
and UVLO threshold.

Fix by aligning the property name strings in aw99706_dt_props[] with the
binding. No value/range changes are needed since both sides already use
the same units and enumerations.

Fixes: 147b38a5ad06 ("backlight: aw99706: Add support for Awinic AW99706 backlight")
Signed-off-by: Junjie Cao <junjie.cao@linux.dev>
---
 drivers/video/backlight/aw99706.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/backlight/aw99706.c b/drivers/video/backlight/aw99706.c
index 938f352aaab7..abacf5a6c8ae 100644
--- a/drivers/video/backlight/aw99706.c
+++ b/drivers/video/backlight/aw99706.c
@@ -130,23 +130,23 @@ static const struct aw99706_dt_prop aw99706_dt_props[] = {
 		AW99706_CFG0_REG, AW99706_DIM_MODE_MASK, 1,
 	},
 	{
-		"awinic,sw-freq", aw99706_dt_property_lookup,
+		"awinic,sw-freq-hz", aw99706_dt_property_lookup,
 		aw99706_sw_freq_tbl, ARRAY_SIZE(aw99706_sw_freq_tbl),
 		AW99706_CFG1_REG, AW99706_SW_FREQ_MASK, 750000,
 	},
 	{
-		"awinic,sw-ilmt", aw99706_dt_property_lookup,
+		"awinic,sw-ilmt-microamp", aw99706_dt_property_lookup,
 		aw99706_sw_ilmt_tbl, ARRAY_SIZE(aw99706_sw_ilmt_tbl),
 		AW99706_CFG1_REG, AW99706_SW_ILMT_MASK, 3000000,
 	},
 	{
-		"awinic,iled-max", aw99706_dt_property_iled_max_convert,
+		"awinic,iled-max-microamp", aw99706_dt_property_iled_max_convert,
 		NULL, 0,
 		AW99706_CFG2_REG, AW99706_ILED_MAX_MASK, 20000,
 
 	},
 	{
-		"awinic,uvlo-thres", aw99706_dt_property_lookup,
+		"awinic,uvlo-thres-microvolt", aw99706_dt_property_lookup,
 		aw99706_ulvo_thres_tbl, ARRAY_SIZE(aw99706_ulvo_thres_tbl),
 		AW99706_CFG2_REG, AW99706_UVLOSEL_MASK, 2200000,
 	},
-- 
2.43.0


             reply	other threads:[~2026-07-01 13:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-01 13:39 Junjie Cao [this message]
2026-07-01 13:39 ` [PATCH 2/2] backlight: aw99706: Validate all DT property values consistently Junjie Cao
2026-07-01 13:52   ` sashiko-bot
2026-07-01 13:49 ` [PATCH 1/2] backlight: aw99706: Fix DT property names to match binding sashiko-bot

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