davinci: add mdio platform devices

This patch adds mdio platform devices on SoCs that have the necessary
hardware.  Clock lookup entries (aliases) have also been added, so that the
MDIO and EMAC drivers can independently enable/disable a shared underlying
clock.  Further, the EMAC MMR region has been split down into separate MDIO
and EMAC regions.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Michael Williamson <michael.williamson@criticallink.com>
Tested-by: Caglar Akyuz <caglarakyuz@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index 6b6f4c643709..71f0f9d5c56a 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -699,7 +699,7 @@ static struct emac_platform_data dm365_emac_pdata = {
 static struct resource dm365_emac_resources[] = {
         {
                 .start  = DM365_EMAC_BASE,
-                .end    = DM365_EMAC_BASE + 0x47ff,
+                .end    = DM365_EMAC_BASE + SZ_16K - 1,
                 .flags  = IORESOURCE_MEM,
         },
         {
@@ -734,6 +734,21 @@ static struct platform_device dm365_emac_device = {
         .resource       = dm365_emac_resources,
 };
 
+static struct resource dm365_mdio_resources[] = {
+        {
+                .start  = DM365_EMAC_MDIO_BASE,
+                .end    = DM365_EMAC_MDIO_BASE + SZ_4K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device dm365_mdio_device = {
+        .name           = "davinci_mdio",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(dm365_mdio_resources),
+        .resource       = dm365_mdio_resources,
+};
+
 static u8 dm365_default_priorities[DAVINCI_N_AINTC_IRQ] = {
         [IRQ_VDINT0]                    = 2,
         [IRQ_VDINT1]                    = 6,
@@ -1220,7 +1235,12 @@ static int __init dm365_init_devices(void)
 
         davinci_cfg_reg(DM365_INT_EDMA_CC);
         platform_device_register(&dm365_edma_device);
+
+        platform_device_register(&dm365_mdio_device);
         platform_device_register(&dm365_emac_device);
+        clk_add_alias(NULL, dev_name(&dm365_mdio_device.dev),
+                      NULL, &dm365_emac_device.dev);
+
         /* Add isif clock alias */
         clk_add_alias("master", dm365_isif_dev.name, "vpss_master", NULL);
         platform_device_register(&dm365_vpss_device);