forked from Minki/linux
6cb68e46a9
On Tegra124, Tegra132 and Tegra210 devices the pads used by the Display Port Auxiliary (DPAUX) channel are multiplexed such that they can also be used by one of the internal I2C controllers. Note that this is different from I2C-over-AUX supported by the DPAUX controller. The register that configures these pads is part of the DPAUX controllers register set and so a pinctrl driver is being added for the DPAUX device to share these pads. Add the device-tree binding documentation for the DPAUX pad controller. Although there is only one group of pads associated with the DPAUX that can be multiplexed, the group still needs to be described by the binding. If the 'groups' property is not present in the binding, then the pads will not be allocated by the pinctrl core for a client and this would allow another client to re-configure the same pads that may already be in-use. Please note that although the "off" function for the DPAUX pads is not technically a pin-mux setting but more of a pin-conf setting it is simpler to expose these as a function so that the user can simply select either "aux", "i2c" or "off" as the current function/mode. Update the main DPAUX binding documentation to reference the DPAUX pad controller binding document and add the 'i2c-bus' subnode. The 'i2c-bus' subnode is used for populating I2C slaves for the DPAUX device so that the I2C driver core does not attempt to add the DPAUX pad controller nodes as I2C slaves. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com> |
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| armada | ||
| atmel | ||
| bridge | ||
| connector | ||
| etnaviv | ||
| exynos | ||
| hisilicon | ||
| imx | ||
| mediatek | ||
| msm | ||
| panel | ||
| rockchip | ||
| sunxi | ||
| tegra | ||
| ti | ||
| tilcdc | ||
| arm,hdlcd.txt | ||
| arm,pl11x.txt | ||
| atmel,lcdc.txt | ||
| brcm,bcm-vc4.txt | ||
| cirrus,clps711x-fb.txt | ||
| fsl,dcu.txt | ||
| fsl,tcon.txt | ||
| marvell,pxa2xx-lcdc.txt | ||
| mipi-dsi-bus.txt | ||
| mxsfb.txt | ||
| renesas,du.txt | ||
| simple-framebuffer-sunxi.txt | ||
| simple-framebuffer.txt | ||
| sm501fb.txt | ||
| snps,arcpgu.txt | ||
| ssd1289fb.txt | ||
| ssd1307fb.txt | ||
| st,stih4xx.txt | ||
| via,vt8500-fb.txt | ||
| wm,prizm-ge-rops.txt | ||
| wm,wm8505-fb.txt | ||