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[1/3] dt-bindings: display: rockchip: document VOP gamma LUT address

Message ID 20190618213406.7667-2-ezequiel@collabora.com (mailing list archive)
State New, archived
Headers show
Series RK3288 Gamma LUT | expand

Commit Message

Ezequiel Garcia June 18, 2019, 9:34 p.m. UTC
Add the register specifier description for an
optional gamma LUT address.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 .../bindings/display/rockchip/rockchip-vop.txt         | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

Comments

Doug Anderson June 20, 2019, 4:43 p.m. UTC | #1
Hi,

On Tue, Jun 18, 2019 at 2:43 PM Ezequiel Garcia <ezequiel@collabora.com> wrote:
>
> Add the register specifier description for an
> optional gamma LUT address.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> ---
>  .../bindings/display/rockchip/rockchip-vop.txt         | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
> index 4f58c5a2d195..97ad78cc7e03 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
> @@ -20,6 +20,13 @@ Required properties:
>                 "rockchip,rk3228-vop";
>                 "rockchip,rk3328-vop";
>
> +- reg: Must contain one entry corresponding to the base address and length
> +       of the register space. Can optionally contain a second entry
> +       corresponding to the CRTC gamma LUT address.
> +
> +- reg-names: "base" for the base register space. If present, the CRTC
> +       gamma LUT name should be "lut".

As per Rob Herring, current suggestion is to avoid reg-names when
possible.  The code should just look for the presence of a 2nd entry
and assume that if it's there that it's the lut range.  Full context:

https://lore.kernel.org/lkml/CAL_Jsq+MMunmVWqeW9v2RyzsMKP+=kMzeTHNMG4JDHM7Fy0HBg@mail.gmail.com/

-Doug
Ezequiel Garcia June 20, 2019, 4:56 p.m. UTC | #2
On Thu, 2019-06-20 at 09:43 -0700, Doug Anderson wrote:
> Hi,
> 
> On Tue, Jun 18, 2019 at 2:43 PM Ezequiel Garcia <ezequiel@collabora.com> wrote:
> > Add the register specifier description for an
> > optional gamma LUT address.
> > 
> > Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> > ---
> >  .../bindings/display/rockchip/rockchip-vop.txt         | 10 +++++++++-
> >  1 file changed, 9 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-
> > vop.txt
> > index 4f58c5a2d195..97ad78cc7e03 100644
> > --- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
> > +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
> > @@ -20,6 +20,13 @@ Required properties:
> >                 "rockchip,rk3228-vop";
> >                 "rockchip,rk3328-vop";
> > 
> > +- reg: Must contain one entry corresponding to the base address and length
> > +       of the register space. Can optionally contain a second entry
> > +       corresponding to the CRTC gamma LUT address.
> > +
> > +- reg-names: "base" for the base register space. If present, the CRTC
> > +       gamma LUT name should be "lut".
> 
> As per Rob Herring, current suggestion is to avoid reg-names when
> possible.  The code should just look for the presence of a 2nd entry
> and assume that if it's there that it's the lut range.  Full context:
> 
> > https://lore.kernel.org/lkml/CAL_Jsq+MMunmVWqeW9v2RyzsMKP+=kMzeTHNMG4JDHM7Fy0HBg@mail.gmail.com/
> 

Oh, that's news to me. I was assuming having reg-names was preferred.

Thanks for the feedback, I'll send a new version.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
index 4f58c5a2d195..97ad78cc7e03 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
@@ -20,6 +20,13 @@  Required properties:
 		"rockchip,rk3228-vop";
 		"rockchip,rk3328-vop";
 
+- reg: Must contain one entry corresponding to the base address and length
+	of the register space. Can optionally contain a second entry
+	corresponding to the CRTC gamma LUT address.
+
+- reg-names: "base" for the base register space. If present, the CRTC
+	gamma LUT name should be "lut".
+
 - interrupts: should contain a list of all VOP IP block interrupts in the
 		 order: VSYNC, LCD_SYSTEM. The interrupt specifier
 		 format depends on the interrupt controller used.
@@ -48,7 +55,8 @@  Example:
 SoC specific DT entry:
 	vopb: vopb@ff930000 {
 		compatible = "rockchip,rk3288-vop";
-		reg = <0xff930000 0x19c>;
+		reg = <0x0 0xff930000 0x0 0x19c>, <0x0 0xff931000 0x0 0x1000>;
+		reg-names = "base", "lut";
 		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
 		clock-names = "aclk_vop", "dclk_vop", "hclk_vop";