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| Started by | Bartosz Golaszewski <bgolaszewski@baylibre.com> |
|---|---|
| First post | 2016-10-31 15:50 +0100 |
| Last post | 2016-11-08 16:00 +0100 |
| Articles | 2 — 2 participants |
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[PATCH v2 0/5] ARM: da850: new drivers for better LCDC support Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-10-31 15:50 +0100
Re: [PATCH v2 0/5] ARM: da850: new drivers for better LCDC support Sekhar Nori <nsekhar@ti.com> - 2016-11-08 16:00 +0100
| From | Bartosz Golaszewski <bgolaszewski@baylibre.com> |
|---|---|
| Date | 2016-10-31 15:50 +0100 |
| Subject | [PATCH v2 0/5] ARM: da850: new drivers for better LCDC support |
| Message-ID | <sym4p-3HL-9@gated-at.bofh.it> |
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 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 -- 2.9.3
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| From | Sekhar Nori <nsekhar@ti.com> |
|---|---|
| Date | 2016-11-08 16:00 +0100 |
| Message-ID | <sBg2u-2e5-3@gated-at.bofh.it> |
| In reply to | #1512592 |
+ 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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