于 2018年6月19日 GMT+08:00 下午3:36:19, Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> 写到:
>On Fri, Jun 15, 2018 at 4:39 AM, Icenowy Zheng <icenowy@xxxxxxx> wrote:
>>
>>
>> 于 2018年6月15日 GMT+08:00 上午1:27:21, "Jernej Škrabec"
><jernej.skrabec@xxxxxxxxx> 写到:
>>>Dne četrtek, 14. junij 2018 ob 19:09:56 CEST je Jagan Teki
>napisal(a):
>>>> On Thu, Jun 14, 2018 at 9:05 PM, Chen-Yu Tsai <wens@xxxxxxxx>
>wrote:
>>>> > From: Icenowy Zheng <icenowy@xxxxxxx>
>>>> >
>>>> > Allwinner A64 has a SRAM controller, and in the device tree
>>>currently
>>>> > we have a syscon node to enable EMAC driver to access the EMAC
>>>clock
>>>> > register. As SRAM controller driver can now export regmap for
>this
>>>> > register, replace the syscon node to the SRAM controller device
>>>node,
>>>> > and let EMAC driver to acquire its EMAC clock regmap.
>>>> >
>>>> > Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
>>>> > [wens@xxxxxxxx: Updated compatible string]
>>>> > Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
>>>> > ---
>>>> >
>>>> > arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 19
>>>+++++++++++++++++--
>>>> > 1 file changed, 17 insertions(+), 2 deletions(-)
>>>> >
>>>> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>>>> > b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index
>>>> > 1b2ef28c42bd..87968dafe1dc 100644
>>>> > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>>>> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>>>> > @@ -169,9 +169,24 @@
>>>> >
>>>> > ranges;
>>>> >
>>>> > syscon: syscon@1c00000 {
>>>> >
>>>> > - compatible =
>>>> > "allwinner,sun50i-a64-system-controller", -
>>>
>>>> > "syscon";
>>>> > + compatible =
>>>> > "allwinner,sun50i-a64-system-control";
>>>> >
>>>> > reg = <0x01c00000 0x1000>;
>>>> >
>>>> > + #address-cells = <1>;
>>>> > + #size-cells = <1>;
>>>> > + ranges;
>>>> > +
>>>> > + sram_c: sram@18000 {
>>>> > + compatible = "mmio-sram";
>>>> > + reg = <0x00018000 0x28000>;
>>>> > + #address-cells = <1>;
>>>> > + #size-cells = <1>;
>>>> > + ranges = <0 0x00018000 0x28000>;
>>>> > +
>>>> > + de2_sram: sram-section@0 {
>>>>
>>>> So, this can attach to display-engine node through allwinner,sram
>and
>>>> add support to claim the sram on sun4i/sun4i_drv.c, correct?
>>>
>>>Actually, it has to be added to display_clocks node and claimed in
>>>drivers/
>>>clk/sunxi-ng/ccu-sun8i-de2.c
>>
>> Sorry it's old practice.
>>
>> My new way is to add a bus driver which claims the SRAM.
>
>Are you pointing this driver[1] ? if yes do we have recent version
>patches for these changes so-that I can import.
I'll resend it when this patchset is ready.
>
>[1] https://patchwork.kernel.org/patch/10290399/
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
