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From: Linus Walleij <linusw@kernel.org>
To: Stephan Gerhold <stephan@gerhold.net>,
	 Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,  Axel Lin <axel.lin@ingics.com>,
	Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>, Lee Jones <lee@kernel.org>
Cc: devicetree@vger.kernel.org, mfd@lists.linux.dev,
	 Linus Walleij <linusw@kernel.org>
Subject: [PATCH v2 03/13] regulator: ab8500: Handle AB8505 VINTCORE selector 7
Date: Tue, 01 Sep 2026 22:02:08 +0200	[thread overview]
Message-ID: <20260901-ux500-dts-snowball-regulator-v2-3-fe88b01829bf@kernel.org> (raw)
In-Reply-To: <20260901-ux500-dts-snowball-regulator-v2-0-fe88b01829bf@kernel.org>

The AB8505 VINTCORE table exposes only selectors 0 through 6. The
hardware also accepts selector 7 and maps it to 1.35 V, just like
selector 6. Omitting it can make an OTP-programmed selector 7 appear
invalid to the regulator core.

Give AB8505 its own eight-entry selector table while leaving the
AB8500 table unchanged.

Reference: AB8505 User Manual, DM00046744 Rev 3, p. 223

Fixes: 547f384f33db ("regulator: ab8500: add support for ab8505")
Assisted-by: LLM
Signed-off-by: Linus Walleij <linusw@kernel.org>
---
 drivers/regulator/ab8500.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 07d96f8ff944..5e24e6cdc773 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -266,6 +266,17 @@ static const unsigned int ldo_vintcore_voltages[] = {
 	1350000,
 };
 
+static const unsigned int ldo_vintcore_ab8505_voltages[] = {
+	1200000,
+	1225000,
+	1250000,
+	1275000,
+	1300000,
+	1325000,
+	1350000,
+	1350000,
+};
+
 static const unsigned int fixed_1200000_voltage[] = {
 	1200000,
 };
@@ -1095,8 +1106,8 @@ static struct ab8500_regulator_info
 			.type		= REGULATOR_VOLTAGE,
 			.id		= AB8505_LDO_INTCORE,
 			.owner		= THIS_MODULE,
-			.n_voltages	= ARRAY_SIZE(ldo_vintcore_voltages),
-			.volt_table	= ldo_vintcore_voltages,
+			.n_voltages	= ARRAY_SIZE(ldo_vintcore_ab8505_voltages),
+			.volt_table	= ldo_vintcore_ab8505_voltages,
 		},
 		.load_lp_uA		= 5000,
 		.update_bank		= 0x03,

-- 
2.55.0


  parent reply	other threads:[~2026-09-01 20:02 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-01 20:02 [PATCH v2 00/13] Add AB8500 buck regulators to the Ux500 device tree Linus Walleij
2026-09-01 20:02 ` [PATCH v2 01/13] regulator: ab8500: Fix AB8505 VANA voltage selectors Linus Walleij
2026-09-01 20:09   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 02/13] regulator: ab8500: Add AB8505 VAUX3 3.05 V setting Linus Walleij
2026-09-01 20:08   ` sashiko-bot
2026-09-01 20:02 ` Linus Walleij [this message]
2026-09-01 20:15   ` [PATCH v2 03/13] regulator: ab8500: Handle AB8505 VINTCORE selector 7 sashiko-bot
2026-09-01 20:02 ` [PATCH v2 04/13] regulator: ab8500: Treat cut 1.0 VAUX3 as fixed Linus Walleij
2026-09-01 20:17   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 05/13] regulator: ab8500: Test dedicated enable bits only Linus Walleij
2026-09-01 20:21   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 06/13] regulator: ab8500: Propagate mode enable read errors Linus Walleij
2026-09-01 20:26   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 07/13] regulator: ab8500: Use linear ranges for LDO voltages Linus Walleij
2026-09-01 20:27   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 08/13] dt-bindings: mfd: ab8500: Add regulators Linus Walleij
2026-09-01 20:30   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 09/13] regulator: ab8500: Add buck converter support Linus Walleij
2026-09-01 20:31   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 10/13] regulator: ab8500: Preserve OTP-enabled buck regulators Linus Walleij
2026-09-01 20:38   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 11/13] regulator: ab8500: Use scoped guard for shared mode mutex Linus Walleij
2026-09-01 20:37   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 12/13] ARM: dts: ux500: Add new AB8500/AB8505 regulators Linus Walleij
2026-09-01 20:41   ` sashiko-bot
2026-09-01 20:02 ` [PATCH v2 13/13] ARM: dts: ux500: Fix up regulator assignments Linus Walleij
2026-09-01 20:45   ` sashiko-bot

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