davinci: RMII support for DA850/OMAP-L138 EVM

DA850/OMAP-L138 EVM has a RMII Ethernet PHY on the UI daughter card. The PHY
is enabled by proper programming of the IO Expander (TCA6416) ports. Also for
RMII PHY to work, the MDIO clock of MII PHY has to be disabled since both the
PHYs have the same address. This is done via the GPIO2[6] pin. This patch adds
support for RMII PHY.

This patch also adds a menuconfig option to select one or no peripheral
connected to expander. Currently, sub-options in this menu are RMII and no
peripheral.This menuconfig option is similar to the one present for UI card on
DA830/OMAP-L137 EVM.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index 84b7c17e5677..330eea0a713f 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -130,6 +130,37 @@ config MACH_DAVINCI_DA850_EVM
         help
           Say Y here to select the TI DA850/OMAP-L138 Evaluation Module.
 
+config DA850_UI_EXP
+        bool "DA850/OMAP-L138 UI (User Interface) board expander configuration"
+        depends on MACH_DAVINCI_DA850_EVM
+        select GPIO_PCA953X
+        help
+          Say Y here if you have the DA850/OMAP-L138 UI
+          (User Interface) board installed and you want to
+          enable the peripherals located on User Interface
+          board contorlled by TCA6416 expander.
+
+choice
+        prompt "Select peripherals connected to expander on UI board"
+        depends on DA850_UI_EXP
+
+config DA850_UI_NONE
+        bool "No peripheral is enabled"
+        help
+          Say Y if you do not want to enable any of the peripherals connected
+          to TCA6416 expander on DA850/OMAP-L138 EVM UI card
+
+config DA850_UI_RMII
+        bool "RMII Ethernet PHY"
+        help
+          Say Y if you want to use the RMII PHY on the DA850/OMAP-L138 EVM.
+          This PHY is found on the UI daughter card that is supplied with
+          the EVM.
+          NOTE: Please take care while choosing this option, MII PHY will
+          not be functional if RMII mode is selected.
+
+endchoice
+
 config DAVINCI_MUX
         bool "DAVINCI multiplexing support"
         depends on ARCH_DAVINCI