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
The patch otherwise looks okay.
Thanks,
Sekhar
Thanks,
Alexandre
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