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
Best regards,
Jernej
--
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
