On Friday 07 April 2017 11:01 PM, Alexandre Bailon wrote:
>
>
> On 04/07/2017 06:15 PM, Alexandre Bailon wrote:
>>
>>
>> On 04/07/2017 04:36 PM, Sekhar Nori wrote:
>>> On Wednesday 05 April 2017 10:47 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 doing anything.
>>>> Add the clock for the CPPI 4.1 DMA engine.
>>>>
>>>> Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
>>>> ---
>>>> arch/arm/mach-davinci/da830.c | 6 ++++++
>>>> arch/arm/mach-davinci/da850.c | 6 ++++++
>>>> 2 files changed, 12 insertions(+)
>>>>
>>>> diff --git a/arch/arm/mach-davinci/da830.c
>>>> b/arch/arm/mach-davinci/da830.c
>>>> index 073c458..bd88470 100644
>>>> --- a/arch/arm/mach-davinci/da830.c
>>>> +++ b/arch/arm/mach-davinci/da830.c
>>>> @@ -304,6 +304,11 @@ static struct clk usb20_clk = {
>>>> .gpsc = 1,
>>>> };
>>>> +static struct clk cppi41_clk = {
>>>> + .name = "cppi41",
>>>> + .parent = &usb20_clk,
>>>> +};
>>>> +
>>>> static struct clk aemif_clk = {
>>>> .name = "aemif",
>>>> .parent = &pll0_sysclk3,
>>>> @@ -413,6 +418,7 @@ 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, &cppi41_clk),
>>> I dont see this device name being used in current linux-next. Is this
>>> name accepted ?
>> There is here a typo. The name should be cppi41-dma-engine.
>> I will fix it.
> Actually, it is not a typo. It would have be more logical to name it
> cppi41-dma-engine
> (like the driver name) but the name is correct.
> The device name is not yet in linux-next as the device is created in
> da8xx driver.
> http://marc.info/?l=linux-usb&m=149080474124498&w=2
Alright, applied this and sent a pull request. Made some minor changes
to commit message text.
Thanks,
Sekhar
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