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SubjectRe: [PATCH v2 0/5] ARM: da850: new drivers for better LCDC support
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+ Arnd, Olof

On Monday 31 October 2016 08:15 PM, Bartosz Golaszewski wrote:
> This series adds two new drivers in order to better support the LCDC
> rev1 present on the da850 boards.
>
> The first patch adds a new memory driver which allows to write to the
> DDR2/mDDR memory controller present on the da8xx SoCs.
>
> The second patch adds a new bus driver which allows to interact with
> the MSTPRI registers of the SYSCFG0 module

I think patches 1/5 and 2/5 are ready to be merged. If there are no
objections I would like to send a pull request for them to be merged
through ARM-SoC tree for v4.10 kernel.

Thanks,
Sekhar

>
> As is mentioned in the comments: we don't want to commit to supporting
> stable interfaces (DT bindings or sysfs attributes) so we hardcode the
> settings required by some boards (for now only da850-lcdk) with the
> hope that linux gets an appropriate framework for performance knobs
> in the future.
>
> Potential extensions of these drivers should be straightforward in the
> future.
>
> Subsequent patches add DT nodes for the new drivers: disabled nodes
> in da850.dtsi and enabled in da850-lcdk.dts.
>
> The last patch adds a workaround for current lack of support for drm
> bridges in tilcdc.
>
> Tested on a da850-lcdk with a display connected over VGA and two
> additional patches for tilcdc (sent to linux-drm): ran simple modetest
> for supported resolutions, used X.org and fluxbox as graphical
> environment, played video with mplayer.
>
> v1 -> v2:
> - used regular readl()/writel() instead of __raw_** versions
> - used resource_size() instead of calculating the size by hand
> - used ioremap instead of syscon in patch [2/5]
> - added the DT nodes in patches [3/5]-[5/5]
>
> Bartosz Golaszewski (5):
> ARM: memory: da8xx-ddrctl: new driver
> ARM: bus: da8xx-mstpri: new driver
> ARM: dts: da850: add the mstpri and ddrctl nodes
> ARM: dts: da850-lcdk: enable mstpri and ddrctl nodes
> ARM: dts: da850-lcdk: add tilcdc panel node
>
> .../devicetree/bindings/bus/ti,da850-mstpri.txt | 20 ++
> .../memory-controllers/ti-da8xx-ddrctl.txt | 20 ++
> arch/arm/boot/dts/da850-lcdk.dts | 71 ++++++
> arch/arm/boot/dts/da850.dtsi | 11 +
> drivers/bus/Kconfig | 9 +
> drivers/bus/Makefile | 2 +
> drivers/bus/da8xx-mstpri.c | 269 +++++++++++++++++++++
> drivers/memory/Kconfig | 8 +
> drivers/memory/Makefile | 1 +
> drivers/memory/da8xx-ddrctl.c | 175 ++++++++++++++
> 10 files changed, 586 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/bus/ti,da850-mstpri.txt
> create mode 100644 Documentation/devicetree/bindings/memory-controllers/ti-da8xx-ddrctl.txt
> create mode 100644 drivers/bus/da8xx-mstpri.c
> create mode 100644 drivers/memory/da8xx-ddrctl.c
>

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