Hi Nishanth,

On 10/22/2015 07:24 PM, Praneeth Bajjuri wrote:
From: "J.D. Schroeder" <jay.schroe...@garmin.com>

UART4 low level debug support. This helps in debugging with UART4
serial console output on DRA7 based platforms.

Extending the following fix for UART4.
commit 1c7e36bfc3e2 ("ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL enabled on 

For using DEBUG_LL, enable CONFIG_DEBUG_OMAP4UART4 in menuconfig.
On DRA7, UART4 hwmod doesn't have this flag enabled,
failure observed when UART4 is used for low level debugging.

Hence, Enable DEBUG_OMAP4UART4_FLAGS for UART4 hwmod.
Replying to your question from V1

we have DRA7 based platforms with UART1/UART3/UART4 for serial console.

1,3 seems to be already fixed in mainline. Hence sending fix only for 4

Signed-off-by: J.D. Schroeder <jay.schroe...@garmin.com>
Signed-off-by: Praneeth Bajjuri <prane...@ti.com>
  arch/arm/mach-omap2/omap_hwmod_7xx_data.c |    2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c 
index 562247b..a242572 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -2065,7 +2065,7 @@ static struct omap_hwmod dra7xx_uart4_hwmod = {
        .class          = &dra7xx_uart_hwmod_class,
        .clkdm_name     = "l4per_clkdm",
        .main_clk       = "uart4_gfclk_mux",
-       .flags          = HWMOD_SWSUP_SIDLE_ACT,
+       .flags          = HWMOD_SWSUP_SIDLE_ACT | DEBUG_OMAP4UART4_FLAGS,
        .prcm = {
                .omap4 = {
                        .clkctrl_offs = DRA7XX_CM_L4PER_UART4_CLKCTRL_OFFSET,

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