ARM: vexpress: Add fixed regulator for SMSC

SMSC driver requires "vdd33a" and "vddvario" regulator supplies now.

Add fixed regulator describing 3V3 power line (in both motherboard's
Device Trees and the non-DT code) and force fixed regulator config
option if regulators framework is enabled.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>

4 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6374a08a6cab..cb15fca4dd04 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -318,6 +318,7 @@ config ARCH_VEXPRESS
         select NO_IOPORT
         select PLAT_VERSATILE
         select PLAT_VERSATILE_CLCD
+        select REGULATOR_FIXED_VOLTAGE if REGULATOR
         help
           This enables support for the ARM Ltd Versatile Express boards.
 
diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
index 142c72a938d3..d8a827bd2bf3 100644
--- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
+++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
@@ -55,6 +55,8 @@
                         reg-io-width = <4>;
                         smsc,irq-active-high;
                         smsc,irq-push-pull;
+                        vdd33a-supply = <&v2m_fixed_3v3>;
+                        vddvario-supply = <&v2m_fixed_3v3>;
                 };
 
                 usb@2,03000000 {
@@ -198,5 +200,13 @@
                                 interrupts = <14>;
                         };
                 };
+
+                v2m_fixed_3v3: fixedregulator@0 {
+                        compatible = "regulator-fixed";
+                        regulator-name = "3V3";
+                        regulator-min-microvolt = <3300000>;
+                        regulator-max-microvolt = <3300000>;
+                        regulator-always-on;
+                };
         };
 };
diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi
index 47ee30791f44..dba53fd026bb 100644
--- a/arch/arm/boot/dts/vexpress-v2m.dtsi
+++ b/arch/arm/boot/dts/vexpress-v2m.dtsi
@@ -54,6 +54,8 @@
                         reg-io-width = <4>;
                         smsc,irq-active-high;
                         smsc,irq-push-pull;
+                        vdd33a-supply = <&v2m_fixed_3v3>;
+                        vddvario-supply = <&v2m_fixed_3v3>;
                 };
 
                 usb@3,03000000 {
@@ -197,5 +199,13 @@
                                 interrupts = <14>;
                         };
                 };
+
+                v2m_fixed_3v3: fixedregulator@0 {
+                        compatible = "regulator-fixed";
+                        regulator-name = "3V3";
+                        regulator-min-microvolt = <3300000>;
+                        regulator-max-microvolt = <3300000>;
+                        regulator-always-on;
+                };
         };
 };
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index a3652a4ddc40..37608f22ee31 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -18,6 +18,8 @@
 #include <linux/clkdev.h>
 #include <linux/clk-provider.h>
 #include <linux/mtd/physmap.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
 
 #include <asm/arch_timer.h>
 #include <asm/mach-types.h>
@@ -199,6 +201,11 @@ static struct platform_device v2m_eth_device = {
         .dev.platform_data = &v2m_eth_config,
 };
 
+static struct regulator_consumer_supply v2m_eth_supplies[] = {
+        REGULATOR_SUPPLY("vddvario", "smsc911x"),
+        REGULATOR_SUPPLY("vdd33a", "smsc911x"),
+};
+
 static struct resource v2m_usb_resources[] = {
         {
                 .start  = V2M_ISP1761,
@@ -503,6 +510,9 @@ static void __init v2m_init(void)
 {
         int i;
 
+        regulator_register_fixed(0, v2m_eth_supplies,
+                        ARRAY_SIZE(v2m_eth_supplies));
+
         platform_device_register(&v2m_pcie_i2c_device);
         platform_device_register(&v2m_ddc_i2c_device);
         platform_device_register(&v2m_flash_device);