Re: [PATCH] ARM: davinci: Add the clock for the CPPI 4.1 DMA engine

[Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>]

Hello!

On 03/29/2017 07:09 PM, Alexandre Bailon wrote:

> The CPPI 4.1 DMA is sharing its clock with the USB OTG,
> and most of the time, the clock will be enabled by USB.
> But during the init of the DMA, USB is not enabled (waiting for DMA),
> and then we must enable the clock before to do anything.

    s/to do/doing/.

> Add the clock for the CPPI 4.1 DMA engine.
>
> Note:
> This patch is to apply instead of:
> "ARM: davinci: Make the usb20 clock available to PM runtime"
>
> Signed-off-by: Alexandre Bailon <abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
> ---
>  arch/arm/mach-davinci/da830.c    | 1 +
>  arch/arm/mach-davinci/da850.c    | 1 +
>  arch/arm/mach-davinci/da8xx-dt.c | 2 ++
>  3 files changed, 4 insertions(+)
>
> diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
> index 073c458..ae4a8a5 100644
> --- a/arch/arm/mach-davinci/da830.c
> +++ b/arch/arm/mach-davinci/da830.c
> @@ -413,6 +413,7 @@ static struct clk_lookup da830_clks[] = {
>  	CLK("davinci-mcasp.1",	NULL,		&mcasp1_clk),
>  	CLK("davinci-mcasp.2",	NULL,		&mcasp2_clk),
>  	CLK("musb-da8xx",	"usb20",	&usb20_clk),
> +	CLK("cppi41-dmaengine",	NULL,		&usb20_clk),
>  	CLK(NULL,		"aemif",	&aemif_clk),
>  	CLK(NULL,		"aintc",	&aintc_clk),
>  	CLK(NULL,		"secu_mgr",	&secu_mgr_clk),
> diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
> index ccad2f9..9739aaa 100644
> --- a/arch/arm/mach-davinci/da850.c
> +++ b/arch/arm/mach-davinci/da850.c
> @@ -560,6 +560,7 @@ static struct clk_lookup da850_clks[] = {
>  	CLK("davinci-nand.0",	"aemif",	&aemif_nand_clk),
>  	CLK("ohci-da8xx",	"usb11",	&usb11_clk),
>  	CLK("musb-da8xx",	"usb20",	&usb20_clk),
> +	CLK("cppi41-dmaengine",	NULL,		&usb20_clk),
>  	CLK("spi_davinci.0",	NULL,		&spi0_clk),
>  	CLK("spi_davinci.1",	NULL,		&spi1_clk),
>  	CLK("vpif",		NULL,		&vpif_clk),
> diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
> index e3cef50..5bf08ba 100644
> --- a/arch/arm/mach-davinci/da8xx-dt.c
> +++ b/arch/arm/mach-davinci/da8xx-dt.c
> @@ -53,6 +53,8 @@ static struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
>  	OF_DEV_AUXDATA("ti,da830-musb", 0x01e00000, "musb-da8xx", NULL),
>  	OF_DEV_AUXDATA("ti,da830-usb-phy", 0x01c1417c, "da8xx-usb-phy", NULL),
>  	OF_DEV_AUXDATA("ti,da850-ahci", 0x01e18000, "ahci_da850", NULL),
> +	OF_DEV_AUXDATA("ti,da830-cppi41", 0x01e01000, "cppi41-dma-engine",

    Not "cppi41-dmaengine"?

[...]

MBR, Sergei

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