sama5d3: make the led D2 as heartbeat.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
sama5d33ek: enable led D3

Signed-off-by: Josh Wu <josh.wu@atmel.com>
serial: at91: distinguish usart and uart

Distinguish usart and uart by read ip name register,
The usart read name is USAR,
The uart and dbgu read name is DBGU.

Signed-off-by: Elen Song <elen.song@atmel.com>
serial: at91: make UART support dma and pdc transfers

Because the UART lack of receive timeout register, so we use a timer to trigger
data receive.
The DBGU is regarded as UART.

Signed-off-by: Elen Song <elen.song@atmel.com>
ARM: at91: dts: add all serial dma configurations for sama5d3x

Signed-off-by: Elen Song <elen.song@atmel.com>
ARM: at91: add missing uart clocks DT entries for sama5d3

Add clocks to clock lookup table for uart DT entries.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
ARM: at91: pm_slowclock - MOR register KEY was missing

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
micrel ksz9021: add generic phy suspend/resume functions

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
ARM: at91: sama5d3x improvement suspend to RAM

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
micrel KSZ8051: add generic phy suspend/resume functions

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>