[U-Boot] [PATCH 0/21] dm: Support GPIO device tree bindings in the uclass
Simon Glass
sjg at chromium.org
Tue Jan 13 05:19:38 CET 2015
Hi Reviewers,
On 5 January 2015 at 19:05, Simon Glass <sjg at chromium.org> wrote:
> At present U-Boot sort-of supports the standard way of reading GPIOs from
> device tree nodes, but the support is incomplete, a bit clunky and only
> works for GPIO bindings where #gpio-cells is 2.
>
> Also, this support can now be built into the uclass, rather than parked in
> a separate file.
>
> Add support for requesting GPIOs based on a list in a device tree node, by
> looking up the phandles. Convert existing boards and remove the old code.
>
> As a side-effect, we now no-longer need to include <asm/gpio.h> in fdtdec.h,
> a problem reported by Masahiro and others.
>
> This series is tested on boards as follows, with the objective being to cover
> each code path:
>
> seaboard
> --------
> LCD comes up, USB host shows partitions, NAND can read/write. Both internal
> MMC and external SD card partition can be read. Ejecting external SD card is
> detected
>
> Tegra20 (SeaBoard) # gpio status
> Bank B:
> B2: output: 1 [x] panel.nvidia,lvds-shutdown-gpios
>
> Bank C:
> C6: output: 1 [x] panel.nvidia,panel-vdd-gpios
>
> Bank D:
> D0: output: 0 [x] usb at c5000000.nvidia,vbus-gpio
> D4: output: 1 [x] panel.nvidia,backlight-enable-gpios
>
> Bank H:
> H1: input: 0 [x] sdhci at c8000400.wp-gpios
> H3: output: 1 [x] nand-controller at 70008000.nvidia,wp-gpios
>
> Bank I:
> I5: input: 0 [x] sdhci at c8000400.cd-gpios
> I6: output: 1 [x] sdhci at c8000400.power-gpios
>
> Bank W:
> W0: output: 1 [x] panel.nvidia,backlight-vdd-gpios
>
> pit
> ---
> LCD comes up, internal MMC and external uSD cards can show a partition list.
> EC works and the interrupt line behaves as expected. USB stick can display
> a partition list.
>
>
Please take a look at this series if you have time. A bit of feedback
on the Exynos and Tegra side would be helpful.
> --
> EC works correctly.
>
>
> Simon Glass (21):
> dm: gpio: Bring in GPIO device tree binding
> dm: exynos: Bring in GPIO device tree binding
> dm: tegra: Bring in GPIO device tree binding
> dm: fdt: Add a function to decode phandles with arguments
> dm: gpio: Add a native driver model API
> dm: gpio: Add a driver GPIO translation method
> dm: gpio: Add better functions to request GPIOs
> dm: gpio: Mark the old GPIO API deprecated
> dm: demo: Add a simple GPIO demonstration
> dm: cros_ec: Remove use of fdtdec GPIO support
> dm: tegra: Add a GPIO translation function
> dm: exynos: Add a GPIO translation function
> dm: tegra: video: Remove use of fdtdec GPIO support
> dm: tegra: nand: Remove use of fdtdec GPIO support
> dm: zynq: Remove inline gpio functions
> dm: mmc: Remove use of fdtdec GPIO support
> dm: usb: Remove use of fdtdec GPIO support
> dm: spi: Remove use of fdtdec GPIO support
> dm: tegra: dts: Use TEGRA_GPIO() macro for all GPIOs
> dm: exynos: dts: Use GPIO bank phandles for GPIOs
> dm: fdt: Remove the old GPIO functions
>
> arch/arm/dts/exynos4.dtsi | 7 -
> arch/arm/dts/exynos4210-origen.dts | 2 +-
> arch/arm/dts/exynos4210-trats.dts | 4 +-
> arch/arm/dts/exynos4210-universal_c210.dts | 12 +-
> arch/arm/dts/exynos4412-odroid.dts | 2 +-
> arch/arm/dts/exynos4412-trats2.dts | 6 +-
> arch/arm/dts/exynos5.dtsi | 4 +-
> arch/arm/dts/exynos5250-smdk5250.dts | 2 +-
> arch/arm/dts/exynos5250-snow.dts | 10 +-
> arch/arm/dts/exynos5420-peach-pit.dts | 8 +-
> arch/arm/dts/exynos5422-odroidxu3.dts | 2 +-
> arch/arm/dts/exynos5800-peach-pi.dts | 10 +-
> arch/arm/dts/tegra114-dalmore.dts | 5 +-
> arch/arm/dts/tegra124-jetson-tk1.dts | 9 +-
> arch/arm/dts/tegra124-venice2.dts | 9 +-
> arch/arm/dts/tegra20-colibri_t20_iris.dts | 10 +-
> arch/arm/dts/tegra20-harmony.dts | 28 +-
> arch/arm/dts/tegra20-medcom-wide.dts | 9 +-
> arch/arm/dts/tegra20-paz00.dts | 18 +-
> arch/arm/dts/tegra20-seaboard.dts | 22 +-
> arch/arm/dts/tegra20-tamonten.dtsi | 9 +-
> arch/arm/dts/tegra20-tec.dts | 9 +-
> arch/arm/dts/tegra20-trimslice.dts | 8 +-
> arch/arm/dts/tegra20-ventana.dts | 18 +-
> arch/arm/dts/tegra20-whistler.dts | 2 +-
> arch/arm/dts/tegra30-apalis.dts | 10 +-
> arch/arm/dts/tegra30-beaver.dts | 10 +-
> arch/arm/dts/tegra30-cardhu.dts | 8 +-
> arch/arm/dts/tegra30-colibri.dts | 6 +-
> arch/arm/dts/tegra30-tamonten.dtsi | 4 +-
> arch/arm/include/asm/arch-pantheon/gpio.h | 0
> arch/arm/include/asm/arch-tegra/tegra_mmc.h | 7 +-
> arch/arm/include/asm/arch-tegra20/display.h | 9 +-
> arch/arm/include/asm/arch-zynq/gpio.h | 15 -
> arch/sandbox/dts/sandbox.dts | 11 +-
> common/cmd_demo.c | 29 +-
> doc/device-tree-bindings/gpio/gpio-samsung.txt | 41 +++
> doc/device-tree-bindings/gpio/gpio.txt | 211 +++++++++++
> .../gpio/nvidia,tegra20-gpio.txt | 40 +++
> drivers/demo/demo-shape.c | 71 ++++
> drivers/demo/demo-uclass.c | 20 ++
> drivers/gpio/gpio-uclass.c | 396 +++++++++++++++++----
> drivers/gpio/s5p_gpio.c | 13 +-
> drivers/gpio/sandbox.c | 20 ++
> drivers/gpio/tegra_gpio.c | 18 +
> drivers/misc/cros_ec.c | 24 +-
> drivers/mmc/s5p_sdhci.c | 20 +-
> drivers/mmc/tegra_mmc.c | 36 +-
> drivers/mtd/nand/tegra_nand.c | 9 +-
> drivers/spi/soft_spi.c | 62 ++--
> drivers/usb/host/ehci-exynos.c | 10 +-
> drivers/usb/host/ehci-tegra.c | 38 +-
> drivers/usb/host/xhci-exynos5.c | 10 +-
> drivers/video/tegra.c | 54 ++-
> include/asm-generic/gpio.h | 265 ++++++++++++++
> include/cros_ec.h | 3 +-
> include/dm-demo.h | 4 +
> include/fdtdec.h | 116 +++---
> include/sdhci.h | 6 +-
> lib/fdtdec.c | 195 +++++-----
> test/dm/gpio.c | 69 +++-
> test/dm/test.dts | 11 +-
> 62 files changed, 1561 insertions(+), 535 deletions(-)
> create mode 100644 arch/arm/include/asm/arch-pantheon/gpio.h
> create mode 100644 doc/device-tree-bindings/gpio/gpio-samsung.txt
> create mode 100644 doc/device-tree-bindings/gpio/gpio.txt
> create mode 100644 doc/device-tree-bindings/gpio/nvidia,tegra20-gpio.txt
>
> --
> 2.2.0.rc0.207.ga3a616c
>
Regards,
Simon
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