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Date: Wed, 3 Feb 2016 21:36:16 +0100
From: Maxime Ripard <maxime.ripard@...e-electrons.com>
To: Chen-Yu Tsai <wens@...e.org>
Cc: Mike Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
David Airlie <airlied@...ux.ie>,
Thierry Reding <thierry.reding@...il.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
linux-clk <linux-clk@...r.kernel.org>,
dri-devel <dri-devel@...ts.freedesktop.org>,
linux-sunxi <linux-sunxi@...glegroups.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Hans de Goede <hdegoede@...hat.com>,
Alexander Kaplan <alex@...tthing.co>,
Boris Brezillon <boris.brezillon@...e-electrons.com>,
Wynter Woods <wynter@...tthing.co>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Rob Clark <robdclark@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH v2 11/26] ARM: sun5i: Add DRAM gates
On Sun, Jan 17, 2016 at 01:10:02AM +0800, Chen-Yu Tsai wrote:
> On Thu, Jan 14, 2016 at 11:24 PM, Maxime Ripard
> <maxime.ripard@...e-electrons.com> wrote:
> > The DRAM gates control whether the image / display devices on the SoC have
> > access to the DRAM clock or not.
> >
> > Enable it.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> > ---
> > arch/arm/boot/dts/sun5i-a10s.dtsi | 7 ++++---
> > arch/arm/boot/dts/sun5i-a13.dtsi | 2 +-
> > arch/arm/boot/dts/sun5i-r8.dtsi | 2 +-
> > arch/arm/boot/dts/sun5i.dtsi | 19 +++++++++++++++++++
> > 4 files changed, 25 insertions(+), 5 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi
> > index bddd0de88af6..52d2c79cb37b 100644
> > --- a/arch/arm/boot/dts/sun5i-a10s.dtsi
> > +++ b/arch/arm/boot/dts/sun5i-a10s.dtsi
> > @@ -66,7 +66,7 @@
> > "simple-framebuffer";
> > allwinner,pipeline = "de_be0-lcd0-hdmi";
> > clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 43>,
> > - <&ahb_gates 44>;
> > + <&ahb_gates 44>, <&dram_gates 26>;
> > status = "disabled";
> > };
> >
> > @@ -74,7 +74,8 @@
> > compatible = "allwinner,simple-framebuffer",
> > "simple-framebuffer";
> > allwinner,pipeline = "de_be0-lcd0";
> > - clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 44>;
> > + clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 44>,
> > + <&dram_gates 26>;
> > status = "disabled";
> > };
> >
> > @@ -83,7 +84,7 @@
> > "simple-framebuffer";
> > allwinner,pipeline = "de_be0-lcd0-tve0";
> > clocks = <&pll5 1>, <&ahb_gates 34>, <&ahb_gates 36>,
> > - <&ahb_gates 44>;
> > + <&ahb_gates 44>, <&dram_gates 26>;
> > status = "disabled";
> > };
> > };
> > diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
> > index 9669b03f20f3..f29163650ca8 100644
> > --- a/arch/arm/boot/dts/sun5i-a13.dtsi
> > +++ b/arch/arm/boot/dts/sun5i-a13.dtsi
> > @@ -62,7 +62,7 @@
> > "simple-framebuffer";
> > allwinner,pipeline = "de_be0-lcd0";
> > clocks = <&ahb_gates 36>, <&ahb_gates 44>, <&de_be_clk>,
> > - <&tcon_ch0_clk>;
> > + <&tcon_ch0_clk>, <&dram_gates 26>;
> > status = "disabled";
> > };
> > };
> > diff --git a/arch/arm/boot/dts/sun5i-r8.dtsi b/arch/arm/boot/dts/sun5i-r8.dtsi
> > index b1e4e0170d51..691d3de75b35 100644
> > --- a/arch/arm/boot/dts/sun5i-r8.dtsi
> > +++ b/arch/arm/boot/dts/sun5i-r8.dtsi
> > @@ -53,7 +53,7 @@
> > allwinner,pipeline = "de_be0-lcd0-tve0";
> > clocks = <&ahb_gates 34>, <&ahb_gates 36>,
> > <&ahb_gates 44>, <&de_be_clk>,
> > - <&tcon_ch1_clk>;
> > + <&tcon_ch1_clk>, <&dram_gates 26>;
> > status = "disabled";
> > };
> > };
> > diff --git a/arch/arm/boot/dts/sun5i.dtsi b/arch/arm/boot/dts/sun5i.dtsi
> > index 0840612b5ed6..c72d94228915 100644
> > --- a/arch/arm/boot/dts/sun5i.dtsi
> > +++ b/arch/arm/boot/dts/sun5i.dtsi
> > @@ -338,6 +338,25 @@
> > clock-output-names = "usb_ohci0", "usb_phy";
> > };
> >
> > + dram_gates: clk@...20100 {
> > + #clock-cells = <1>;
> > + compatible = "allwinner,sun5i-a13-dram-gates-clk";
> > + reg = <0x01c20100 0x4>;
> > + clocks = <&pll5 0>;
> > + clock-indices = <0>,
> > + <1>,
>
> According to A10s manual, bit 3 is DRAM clock for TS (transport stream
> decoder), while bit 5 is for the TV encoder.
>
> The others look good.
I'll fix that, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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