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Date: Tue, 22 Apr 2014 21:36:25 +0900
From: Cho KyongHo <pullip.cho@...sung.com>
To: Shaik Ameer Basha <shaik.samsung@...il.com>
Cc: Linux ARM Kernel <linux-arm-kernel@...ts.infradead.org>,
Linux DeviceTree <devicetree@...r.kernel.org>,
Linux IOMMU <iommu@...ts.linux-foundation.org>,
Linux Kernel <linux-kernel@...r.kernel.org>,
Linux Samsung SOC <linux-samsung-soc@...r.kernel.org>,
Antonios Motakis <a.motakis@...tualopensystems.com>,
Grant Grundler <grundler@...omium.org>,
Joerg Roedel <joro@...tes.org>,
Kukjin Kim <kgene.kim@...sung.com>,
Prathyush <prathyush.k@...sung.com>,
Rahul Sharma <rahul.sharma@...sung.com>,
Sachin Kamat <sachin.kamat@...aro.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Tomasz Figa <t.figa@...sung.com>,
Varun Sethi <Varun.Sethi@...escale.com>
Subject: Re: [PATCH v11 12/27] ARM: dts: Add description of System MMU of
Exynos SoCs
On Sun, 20 Apr 2014 15:25:59 +0530, Shaik Ameer Basha wrote:
> Hi KyongHo Cho,
>
> Please find the comments inline.
>
> On Fri, Mar 14, 2014 at 10:36 AM, Cho KyongHo <pullip.cho@...sung.com> wrote:
> > This patch adds dts entries for the System MMU devices found on
> > Exynos4 and Exynos5 SoC series and the System MMU binding
> > documentation.
> >
> > CC: Rob Herring <robherring2@...il.com>
> > CC: Sylwester Nawrocki <s.nawrocki@...sung.com>
> > Signed-off-by: Cho KyongHo <pullip.cho@...sung.com>
> > ---
> > .../bindings/iommu/samsung,exynos4210-sysmmu.txt | 86 +++++++
> > arch/arm/boot/dts/exynos4.dtsi | 107 ++++++++
> > arch/arm/boot/dts/exynos4210.dtsi | 23 +-
> > arch/arm/boot/dts/exynos4x12.dtsi | 77 +++++-
> > arch/arm/boot/dts/exynos5250.dtsi | 266 +++++++++++++++++++-
> > arch/arm/boot/dts/exynos5420.dtsi | 205 ++++++++++++++-
> > 6 files changed, 758 insertions(+), 6 deletions(-)
> > create mode 100644 Documentation/devicetree/bindings/iommu/samsung,exynos4210-sysmmu.txt
> >
> > diff --git a/Documentation/devicetree/bindings/iommu/samsung,exynos4210-sysmmu.txt b/Documentation/devicetree/bindings/iommu/samsung,exynos4210-sysmmu.txt
> > new file mode 100644
> > index 0000000..e4417bb
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iommu/samsung,exynos4210-sysmmu.txt
> > @@ -0,0 +1,86 @@
> > +Samsung Exynos IOMMU H/W, System MMU (System Memory Management Unit)
> > +
> > +Samsung's Exynos architecture contains System MMUs that enables scattered
> > +physical memory chunks visible as a contiguous region to DMA-capable peripheral
> > +devices like MFC, FIMC, FIMD, GScaler, FIMC-IS and so forth.
> > +
>
> [snip]
>
>
> > diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> > index 8f6300f..df336ea 100644
> > --- a/arch/arm/boot/dts/exynos5250.dtsi
> > +++ b/arch/arm/boot/dts/exynos5250.dtsi
> > @@ -80,6 +80,16 @@
> > reg = <0x10044040 0x20>;
> > };
> >
> > + pd_isp: isp-power-domain@...0044020 {
> > + compatible = "samsung,exynos4210-pd";
> > + reg = <0x10044020 0x20>;
> > + };
> > +
> > + pd_disp1: disp1-power-domain@...00440A0 {
> > + compatible = "samsung,exynos4210-pd";
> > + reg = <0x100440A0 0x20>;
> > + };
> > +
> > clock: clock-controller@...10000 {
> > compatible = "samsung,exynos5250-clock";
> > reg = <0x10010000 0x30000>;
> > @@ -679,7 +689,7 @@
> > "sclk_hdmiphy", "mout_hdmi";
> > };
> >
> > - mixer {
> > + mixer: mixer {
> > compatible = "samsung,exynos5250-mixer";
> > reg = <0x14450000 0x10000>;
> > interrupts = <0 94 0>;
> > @@ -700,7 +710,7 @@
> > phy-names = "dp";
> > };
> >
> > - fimd@...00000 {
> > + fimd: fimd@...00000 {
> > clocks = <&clock 133>, <&clock 339>;
> > clock-names = "sclk_fimd", "fimd";
> > };
> > @@ -715,4 +725,256 @@
> > io-channel-ranges;
> > status = "disabled";
> > };
> > +
> > + sysmmu_g2d: sysmmu@...60000 {
> > + compatible = "samsung,sysmmu-v1";
> > + reg = <0x10A60000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <24 5>;
> > + clock-names = "sysmmu";
> > + clocks = <&clock 361>;
> > + };
> > +
> > + sysmmu_mfc_r: sysmmu@...00000 {
> > + compatible = "samsung,sysmmu-v2";
> > + reg = <0x11200000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <6 2>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 268>, <&clock 266>;
>
> Add mmu-masters...
> mmu-masters = <&mfc>;
>
Ok.
> > + samsung,power-domain = <&pd_mfc>;
> > + };
> > +
> > + sysmmu_mfc_l: sysmmu@...10000 {
> > + compatible = "samsung,sysmmu-v2";
> > + reg = <0x11210000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <8 5>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 267>, <&clock 266>;
>
> Add mmu-masters...
> mmu-masters = <&mfc>;
>
OK.
>
> > + samsung,power-domain = <&pd_mfc>;
> > + };
> > +
> > + sysmmu_rotator: sysmmu@...40000 {
> > + compatible = "samsung,sysmmu-v1";
> > + reg = <0x11D40000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <4 0>;
> > + clock-names = "sysmmu";
> > + clocks = <&clock 272>;
> > + };
> > +
>
> [snip]
>
> > };
> > diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
> > index 45e2e65..a736f09 100644
> > --- a/arch/arm/boot/dts/exynos5420.dtsi
> > +++ b/arch/arm/boot/dts/exynos5420.dtsi
> > @@ -470,7 +470,7 @@
> > phy-names = "dp";
> > };
> >
> > - fimd@...00000 {
> > + fimd: fimd@...00000 {
> > samsung,power-domain = <&disp_pd>;
> > clocks = <&clock 147>, <&clock 421>;
> > clock-names = "sclk_fimd", "fimd";
> > @@ -641,7 +641,7 @@
> > status = "disabled";
> > };
> >
> > - mixer@...50000 {
> > + mixer: mixer@...50000 {
> > compatible = "samsung,exynos5420-mixer";
> > reg = <0x14450000 0x10000>;
> > interrupts = <0 94 0>;
> > @@ -720,4 +720,205 @@
> > clock-names = "watchdog";
> > samsung,syscon-phandle = <&pmu_system_controller>;
> > };
> > +
> > + sysmmu_g2dr: sysmmu@...60000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x10A60000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <24 5>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 482>, <&clock 481>;
> > + };
> > +
> > + sysmmu_g2dw: sysmmu@...70000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x10A60000 0x1000>;
>
> Duplicate sysmmu reg base address.
> reg = <0x10A70000 0x1000>;
>
Oh, really it is.
Thanks.
> > + interrupt-parent = <&combiner>;
> > + interrupts = <22 2>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 482>, <&clock 481>;
> > + };
> > +
> > + sysmmu_scaler0r: sysmmu@...80000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x12880000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <22 4>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 384>, <&clock 381>;
> > + };
> > +
> > + sysmmu_scaler1r: sysmmu@...90000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x12890000 0x1000>;
> > + interrupts = <0 186 0>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 385>, <&clock 382>;
> > + };
> > +
> > + sysmmu_scaler2r: sysmmu@...A0000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x128A0000 0x1000>;
> > + interrupts = <0 188 0>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 386>, <&clock 383>;
> > + };
> > +
> > + sysmmu_scaler0w: sysmmu@...C0000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x128C0000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <27 2>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 384>, <&clock 381>;
> > + };
> > +
> > + sysmmu_scaler1w: sysmmu@...D0000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x128D0000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <22 6>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 385>, <&clock 382>;
> > + };
> > +
> > + sysmmu_scaler2w: sysmmu@...E0000 {
> > + compatible = "samsung,sysmmu-v3.2";
> > + reg = <0x128E0000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <19 6>;
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 386>, <&clock 383>;
> > + };
> > +
> > + sysmmu_mfc_r: sysmmu@...00000 {
>
> 0x11200000 belongs to mfc_l
> sysmmu_mfc_l: sysmmu@...00000
>
OK. thanks.
> > + compatible = "samsung,sysmmu-v2";
> > + reg = <0x11200000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <6 2>;
>
> interrupts = <8 5>;
> Add mmu-masters field,
> mmu-masters = <&mfc>;
Oh, irq is also changed.
Thanks.
>
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 402>, <&clock 401>;
>
> clocks = <&clock 403>, <&clock 401>;
Thanks.
This will be fixed with macro names.
>
> > + samsung,power-domain = <&mfc_pd>;
> > + };
> > +
> > + sysmmu_mfc_l: sysmmu@...10000 {
>
> 0x11210000 belongs to mfc_r
> sysmmu_mfc_r: sysmmu@...10000
>
OK.
> > + compatible = "samsung,sysmmu-v2";
> > + reg = <0x11210000 0x1000>;
> > + interrupt-parent = <&combiner>;
> > + interrupts = <8 5>;
>
> interrupts = <6 2>;
> Add mmu-masters field,
> mmu-masters = <&mfc>;
>
OK.
> > + clock-names = "sysmmu", "master";
> > + clocks = <&clock 403>, <&clock 401>;
>
> clocks = <&clock 402>, <&clock 401>;
>
Thanks for pointing out many mistakes.
Regards,
KyongHo
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