ARM: at91: sama5d3xek: reserve dma channel for audio

We set the DMA configuration on USARTs in the SoC DT in (ARM: at91: sama5d3:
add usart dma configurations). As the audio must work with DMA channels, we
reserve some dma channels for audio, or else audio won't work.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
[nicolas.ferre@atmel.com: move to the sama5d3xmb.dtsi to cover all board variants]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/dt: at91sam9rl: switch ssc compatible string

As the SSC integrate in at91sam9rl support frame sync length
extension, so switch compatible string to support this feature.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/dt: at91sam9g20: switch ssc compatible string

As the SSC integrate in at91sam9g20 support frame sync length
extension, so switch compatible string to support this feature.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/dt: Fix typo regarding can0_clk

Otherwise the clock for can0 will never get enabled.

Signed-off-by: David Dueck <davidcdueck@googlemail.com>
Signed-off-by: Anthony Harivel <anthony.harivel@emtrion.de>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: stable@vger.kernel.org # v3.14
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/dt: declare sckc node on at91sam9g45

Declare the SCKC (Slow Clock Configuration) block and its clks.
Make use of the clk32k clk instead of slow_osc where appropriate.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>