linux-kernel - [PATCH] ARM: davinci: dm644x-evm: Add Fixed regulators needed for tlv320aic33

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Date:   Fri, 30 Aug 2019 13:23:08 +0300
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     <nsekhar@...com>, <bgolaszewski@...libre.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] ARM: davinci: dm644x-evm: Add Fixed regulators needed for tlv320aic33

The codec driver needs correct regulators in order to probe.
Both VCC_3.3V and VCC_1.8V is always on fixed regulators on the board.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 arch/arm/mach-davinci/board-dm644x-evm.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index 9d87d4e440ea..8406c82e1da4 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -29,6 +29,8 @@
 #include <linux/v4l2-dv-timings.h>
 #include <linux/export.h>
 #include <linux/leds.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
 
 #include <media/i2c/tvp514x.h>
 
@@ -653,6 +655,19 @@ static struct i2c_board_info __initdata i2c_info[] =  {
 	},
 };
 
+/* Fixed regulator support */
+static struct regulator_consumer_supply fixed_supplies_3_3v[] = {
+	/* Baseboard 3.3V: 5V -> TPS54310PWP -> 3.3V */
+	REGULATOR_SUPPLY("AVDD", "1-001b"),
+	REGULATOR_SUPPLY("DRVDD", "1-001b"),
+};
+
+static struct regulator_consumer_supply fixed_supplies_1_8v[] = {
+	/* Baseboard 1.8V: 5V -> TPS54310PWP -> 1.8V */
+	REGULATOR_SUPPLY("IOVDD", "1-001b"),
+	REGULATOR_SUPPLY("DVDD", "1-001b"),
+};
+
 #define DM644X_I2C_SDA_PIN	GPIO_TO_PIN(2, 12)
 #define DM644X_I2C_SCL_PIN	GPIO_TO_PIN(2, 11)
 
@@ -831,6 +846,11 @@ static __init void davinci_evm_init(void)
 
 	dm644x_register_clocks();
 
+	regulator_register_always_on(0, "fixed-dummy", fixed_supplies_1_8v,
+				     ARRAY_SIZE(fixed_supplies_1_8v), 1800000);
+	regulator_register_always_on(1, "fixed-dummy", fixed_supplies_3_3v,
+				     ARRAY_SIZE(fixed_supplies_3_3v), 3300000);
+
 	dm644x_init_devices();
 
 	ret = dm644x_gpio_register();
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
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