linux-kernel - [PATCH] ARM: davinci: dm365-evm: Add Fixed regulators needed for tlv320aic3101

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Date:   Fri, 30 Aug 2019 13:22:52 +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: dm365-evm: Add Fixed regulators needed for tlv320aic3101

The codec driver needs correct regulators in order to probe.
Both VCC_3V3 and VCC_1V8 is always on fixed regulators on the board.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 arch/arm/mach-davinci/board-dm365-evm.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index 150a36f333df..2328b15ac067 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -30,6 +30,8 @@
 #include <linux/spi/eeprom.h>
 #include <linux/v4l2-dv-timings.h>
 #include <linux/platform_data/ti-aemif.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -245,6 +247,19 @@ static struct davinci_i2c_platform_data i2c_pdata = {
 	.bus_delay	= 0	/* usec */,
 };
 
+/* Fixed regulator support */
+static struct regulator_consumer_supply fixed_supplies_3_3v[] = {
+	/* Baseboard 3.3V: 5V -> TPS767D301 -> 3.3V */
+	REGULATOR_SUPPLY("AVDD", "1-0018"),
+	REGULATOR_SUPPLY("DRVDD", "1-0018"),
+	REGULATOR_SUPPLY("IOVDD", "1-0018"),
+};
+
+static struct regulator_consumer_supply fixed_supplies_1_8v[] = {
+	/* Baseboard 1.8V: 5V -> TPS767D301 -> 1.8V */
+	REGULATOR_SUPPLY("DVDD", "1-0018"),
+};
+
 static int dm365evm_keyscan_enable(struct device *dev)
 {
 	return davinci_cfg_reg(DM365_KEYSCAN);
@@ -800,6 +815,11 @@ static __init void dm365_evm_init(void)
 	if (ret)
 		pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 
+	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);
+
 	nvmem_add_cell_table(&davinci_nvmem_cell_table);
 	nvmem_add_cell_lookups(&davinci_nvmem_cell_lookup, 1);
 
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
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