[PATCH 2/5] ARM: dts: sun4i: Add A10 SRAM and SRAM controller

Hans de Goede
2015-03-26T14:42:31Z

Hi,

On 24-03-15 16:20, Maxime Ripard wrote:
> On Fri, Mar 20, 2015 at 07:52:46PM +0100, Hans de Goede wrote:
>> The A10 has a few SRAM that can be mapped either to a device or to the CPU,
>> with the mapping being controlled by a SRAM controller.
>>
>> Since most of the time these SRAM won't be accessible by the CPU,
>> we can't use the mmio-sram driver and compatible.
>>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>> arch/arm/boot/dts/sun4i-a10.dtsi | 34 ++++++++++++++++++++++++++++++++++
>> 1 file changed, 34 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
>> index b66ebb3..88f57b4 100644
>> --- a/arch/arm/boot/dts/sun4i-a10.dtsi
>> +++ b/arch/arm/boot/dts/sun4i-a10.dtsi
>> @@ -451,12 +451,46 @@
>> };
>> };
>>
>> + /*
>> + * Note we use the address were mmio registers start, not where the
> ^ where
>

Fixed in patches 2 to 4.

Regards,

Hans

>> + * SRAM blocks start, this cannot be changed because that would be
>> + * a devicetree ABI change.
>> + */
>> soc at 01c00000 {
>> compatible = "simple-bus";
>> #address-cells = <1>;
>> #size-cells = <1>;
>> ranges;
>>
>> + sram at 00000000 {
>> + compatible = "allwinner,sun4i-a10-sram";
>> + reg = <0x00000000 0x4000>;
>> + allwinner,sram-name = "A1";
>> + };
>> +
>> + sram at 00004000 {
>> + compatible = "allwinner,sun4i-a10-sram";
>> + reg = <0x00004000 0x4000>;
>> + allwinner,sram-name = "A2";
>> + };
>> +
>> + sram at 00008000 {
>> + compatible = "allwinner,sun4i-a10-sram";
>> + reg = <0x00008000 0x4000>;
>> + allwinner,sram-name = "A3-A4";
>> + };
>> +
>> + sram at 00010000 {
>> + compatible = "allwinner,sun4i-a10-sram";
>> + reg = <0x00010000 0x1000>;
>> + allwinner,sram-name = "D";
>> + };
>> +
>> + sram-controller at 01c00000 {
>> + compatible = "allwinner,sun4i-a10-sram-controller";
>> + reg = <0x01c00000 0x30>;
>> + };
>> +
>> dma: dma-controller at 01c02000 {
>> compatible = "allwinner,sun4i-a10-dma";
>> reg = <0x01c02000 0x1000>;
>> --
>> 2.3.3
>>
>