[U-Boot] [PATCH 4/4] mx5: Mark lowlevel_init board-specific code

[Benoît Thébaudeau]

> The mx5 lowlevel_init.S contains board-specific code based on the
> reference
> design. Let's keep it since it avoids creating new lowlevel_init
> files and it
> may be used by many boards. But add a config to make it optional in
> order not to
> cause issues on boards not following this part of the reference
> design.
> 
> Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau at advansee.com>
> Cc: Stefano Babic <sbabic at denx.de>

Adding missing board maintainers to Cc.

> ---
>  .../arch/arm/cpu/armv7/mx5/lowlevel_init.S         |    2 +-
>  .../doc/README.imx5                                |    5 +++++
>  .../include/configs/efikamx.h                      |    1 +
>  .../include/configs/mx51evk.h                      |    1 +
>  .../include/configs/vision2.h                      |    1 +
>  5 files changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git u-boot-4d3c95f.orig/arch/arm/cpu/armv7/mx5/lowlevel_init.S
> u-boot-4d3c95f/arch/arm/cpu/armv7/mx5/lowlevel_init.S
> index d0f75fa..b25b3a7 100644
> --- u-boot-4d3c95f.orig/arch/arm/cpu/armv7/mx5/lowlevel_init.S
> +++ u-boot-4d3c95f/arch/arm/cpu/armv7/mx5/lowlevel_init.S
> @@ -330,7 +330,7 @@ ENTRY(lowlevel_init)
>  	mov r10, lr
>  	mov r4, #0	/* Fix R4 to 0 */
>  
> -#if defined(CONFIG_MX51)
> +#if defined(CONFIG_SYS_MAIN_PWR_ON)
>  	ldr r0, =GPIO1_BASE_ADDR
>  	ldr r1, [r0, #0x0]
>  	orr r1, r1, #1 << 23
> diff --git u-boot-4d3c95f.orig/doc/README.imx5
> u-boot-4d3c95f/doc/README.imx5
> index 938d3da..85d476f 100644
> --- u-boot-4d3c95f.orig/doc/README.imx5
> +++ u-boot-4d3c95f/doc/README.imx5
> @@ -20,3 +20,8 @@ i.MX5x SoCs.
>      mode), which causes the effect of this failure to be much lower
>      (in terms
>      of frequency deviation), avoiding system failure, or at least
>      decreasing
>      the likelihood of system failure.
> +
> +1.3 CONFIG_SYS_MAIN_PWR_ON: Trigger MAIN_PWR_ON upon startup.
> +    This option should be enabled for boards having a SYS_ON_OFF_CTL
> signal
> +    connected to GPIO1[23] and triggering the MAIN_PWR_ON signal
> like in the
> +    reference designs.
> diff --git u-boot-4d3c95f.orig/include/configs/efikamx.h
> u-boot-4d3c95f/include/configs/efikamx.h
> index 143b0f0..792b51b 100644
> --- u-boot-4d3c95f.orig/include/configs/efikamx.h
> +++ u-boot-4d3c95f/include/configs/efikamx.h
> @@ -270,5 +270,6 @@
>  
>  #define CONFIG_SYS_DDR_CLKSEL		0
>  #define CONFIG_SYS_CLKTL_CBCDR		0x59E35145
> +#define CONFIG_SYS_MAIN_PWR_ON
>  
>  #endif
> diff --git u-boot-4d3c95f.orig/include/configs/mx51evk.h
> u-boot-4d3c95f/include/configs/mx51evk.h
> index e975f54..6867f7b 100644
> --- u-boot-4d3c95f.orig/include/configs/mx51evk.h
> +++ u-boot-4d3c95f/include/configs/mx51evk.h
> @@ -242,6 +242,7 @@
>  
>  #define CONFIG_SYS_DDR_CLKSEL	0
>  #define CONFIG_SYS_CLKTL_CBCDR	0x59E35100
> +#define CONFIG_SYS_MAIN_PWR_ON
>  
>  /*-----------------------------------------------------------------------
>   * FLASH and environment organization
> diff --git u-boot-4d3c95f.orig/include/configs/vision2.h
> u-boot-4d3c95f/include/configs/vision2.h
> index ed004a6..3ce4906 100644
> --- u-boot-4d3c95f.orig/include/configs/vision2.h
> +++ u-boot-4d3c95f/include/configs/vision2.h
> @@ -203,6 +203,7 @@
>  /* 166 MHz DDR RAM */
>  #define CONFIG_SYS_DDR_CLKSEL		0
>  #define CONFIG_SYS_CLKTL_CBCDR		0x19239100
> +#define CONFIG_SYS_MAIN_PWR_ON
>  
>  #define CONFIG_SYS_NO_FLASH
>  
>