[PATCH V2] davinci: da850: move input frequency to board specific files

[nm@ti.com (Menon, Nishanth)]

On Fri, May 27, 2011 at 02:20, Christian Riesch
<christian.riesch@omicron.at> wrote:
> From: Bob Dunlop <bob.dunlop@xyzzy.org.uk>
>
> Currently the input frequency of the SoC is hardcoded in the SoC specific
> da850.c file to 24 MHz. Since the SoC accepts input frequencies in a wide
> range from 12 to 50 MHz, boards with different oscillator/crystal
> frequencies may be built.
>
> This patch allows setting a different input frequency in the board
> specific files to support boards with oscillator/crystal frequencies other
> than 24 MHz.
Curious question: have you considered Documentation/power/opp.txt? Not
entirely sure if that will help, but I am curious to know if there are
reasons why it did not scale for you

Regards,
Nishanth Menon

>
> Signed-off-by: Bob Dunlop <bob.dunlop@xyzzy.org.uk>
> Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
> ---
>
> Hi,
> in private email Bob Dunlop suggested to pass a pointer to a small
> structure instead of the frequency value to allow future expansions,
> e.g., for the OPP list. Therefore I submit his patch as V2.
> Christian
>
> ?arch/arm/mach-davinci/board-da850-evm.c ? ? | ? ?2 +-
> ?arch/arm/mach-davinci/board-mityomapl138.c ?| ? ?2 +-
> ?arch/arm/mach-davinci/board-omapl138-hawk.c | ? ?2 +-
> ?arch/arm/mach-davinci/da850.c ? ? ? ? ? ? ? | ? ?5 ++++-
> ?arch/arm/mach-davinci/include/mach/da8xx.h ?| ? ?6 +++++-
> ?5 files changed, 12 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
> index a7b41bf..231ff87 100644
> --- a/arch/arm/mach-davinci/board-da850-evm.c
> +++ b/arch/arm/mach-davinci/board-da850-evm.c
> @@ -1252,7 +1252,7 @@ console_initcall(da850_evm_console_init);
>
> ?static void __init da850_evm_map_io(void)
> ?{
> - ? ? ? da850_init();
> + ? ? ? da850_init(NULL);
> ?}
>
> ?MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138/AM18x EVM")
> diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
> index 606a6f2..362770c 100644
> --- a/arch/arm/mach-davinci/board-mityomapl138.c
> +++ b/arch/arm/mach-davinci/board-mityomapl138.c
> @@ -561,7 +561,7 @@ console_initcall(mityomapl138_console_init);
>
> ?static void __init mityomapl138_map_io(void)
> ?{
> - ? ? ? da850_init();
> + ? ? ? da850_init(NULL);
> ?}
>
> ?MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
> diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
> index 67c38d0..c43a6c3 100644
> --- a/arch/arm/mach-davinci/board-omapl138-hawk.c
> +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
> @@ -334,7 +334,7 @@ console_initcall(omapl138_hawk_console_init);
>
> ?static void __init omapl138_hawk_map_io(void)
> ?{
> - ? ? ? da850_init();
> + ? ? ? da850_init(NULL);
> ?}
>
> ?MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
> diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
> index 133aac4..ebd0603 100644
> --- a/arch/arm/mach-davinci/da850.c
> +++ b/arch/arm/mach-davinci/da850.c
> @@ -1104,10 +1104,13 @@ static struct davinci_soc_info davinci_soc_info_da850 = {
> ? ? ? ?.reset_device ? ? ? ? ? = &da8xx_wdt_device,
> ?};
>
> -void __init da850_init(void)
> +void __init da850_init(struct da850_init_board_info *board)
> ?{
> ? ? ? ?unsigned int v;
>
> + ? ? ? if (board && board->ref_clk_rate)
> + ? ? ? ? ? ? ? ref_clk.rate = board->ref_clk_rate;
> +
> ? ? ? ?davinci_common_init(&davinci_soc_info_da850);
>
> ? ? ? ?da8xx_syscfg0_base = ioremap(DA8XX_SYSCFG0_BASE, SZ_4K);
> diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
> index ad64da7..66efc5d 100644
> --- a/arch/arm/mach-davinci/include/mach/da8xx.h
> +++ b/arch/arm/mach-davinci/include/mach/da8xx.h
> @@ -69,8 +69,12 @@ extern unsigned int da850_max_speed;
> ?#define DA8XX_AEMIF_CTL_BASE ? 0x68000000
> ?#define DA8XX_ARM_RAM_BASE ? ? 0xffff0000
>
> +struct da850_init_board_info {
> + ? ? ? unsigned long ref_clk_rate;
> +};
> +
> ?void __init da830_init(void);
> -void __init da850_init(void);
> +void __init da850_init(struct da850_init_board_info *board);
>
> ?int da830_register_edma(struct edma_rsv_info *rsv);
> ?int da850_register_edma(struct edma_rsv_info *rsv[2]);
> --
> 1.7.0.4
>
>
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