u-boot.git/drivers/pinctrl/pinctrl-uclass.c, branch v2019.10-rc2

pinctrl: gpio: Add callback for configuring pin as GPIO

2019-05-04T17:26:49Z

Add callback to configure, and de-configure, pin as a GPIO on the pin controller side. This matches similar functionality in Linux and aims to replace the ad-hoc implementations present in U-Boot. Signed-off-by: Marek Vasut Cc: Alex Kiernan Cc: Christoph Muellner Cc: Eugeniu Rosca Cc: Patrice Chotard Cc: Patrick DELAUNAY Cc: Philipp Tomsich Cc: Simon Glass

pinctrl: exit pinconfig_post_bind if there are no subnodes

2019-04-30T22:00:05Z

This fixes RK3288 SPL hanging or hitting this assert: drivers/core/ofnode.c:183: ofnode_first_subnode: Assertion `ofnode_valid(node)' failed. Signed-off-by: Urja Rannikko Reviewed-by: Simon Glass Reviewed-by: Philipp Tomsich

dm: pinctrl: Skip gpio-controller node in pinconfig_post_bind()

2019-04-12T02:10:05Z

Some binding define child node gpio-controller without compatible property. This patch avoid to bind the pinconfig uclass to these node. For example, the binding for st,stm32-pinctrl (./device-tree-bindings/pinctrl/st,stm32-pinctrl.txt) defines the GPIO controller/bank node as sub-node of pincontrol (st,stm32f429-pinctrl) but without compatible (as it is not mandatory). Signed-off-by: Patrick Delaunay Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

dm: pinctrl: Avoid race condition on probe for UCLASS_PINCTRL

2019-04-12T02:10:05Z

In case of system with several pin-controller device, probe the first UCLASS_PINCTRL by seq number (defined by alias) to avoid race condition with I2C PINCONTROL driver for GPIO expander (GPIO expander need I2C bus, I2C driver need PINCONFIG). Signed-off-by: Patrick DELAUNAY Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

dm: pinctrl: Remove obsolete function pinctrl_decode_pin_config_dm().

2019-04-12T02:10:05Z

This reverts commit 5ff776889212c080e3d1a33634ac904405ed6845. As noted in the comment, the function pinctrl_decode_pin_config_dm() only served as a temporary solution. Since the function has no users anymore, we can remove it again. Signed-off-by: Christoph Muellner Reviewed-by: Simon Glass

Revert "dm: pinctrl: Prevent (re-)configuring pins when already done before relocation"

2019-01-11T15:03:42Z

This reverts commit a7f4b4b344396590845e6552c82829ef68ef9f89. As reported by Alex Kiernan the above optimization introduces a regression in the below use case where: 1. Device has defined 'u-boot,dm-spl' property (@ eMMC DTS node) 2. The device downloads its MLO/SPL via UART (not eMMC - the eMMC pinmux pins are NOT probed/configured in MLO/SPL). 3. The loaded via UART MLO/SPL wants to load Linux from eMMC. In this case the DM core and pinctrl uclass checks 'u-boot,dm-spl' and don't configure pins (as it thinks that those were initialized in MLO/SPL). As we are very close to release - please revert this commit. Reported-by: Alex Kiernan Signed-off-by: Lukasz Majewski Reviewed-by: Simon Glass

dm: pinctrl: Add pinctrl_decode_pin_config_dm().

2019-01-02T21:38:44Z

pinctrl_decode_pin_config_dm() is basically a feature-equivalent implementation of pinctrl_decode_pin_config(), which operates on struct udevice devices and uses the dev_read_*() API. Signed-off-by: Christoph Muellner Reviewed-by: Philipp Tomsich

dm: pinctrl: Prevent (re-)configuring pins when already done before relocation

2018-12-27T02:21:07Z

This commit prevents from re-configuring pins if those were configured before relocation. Some pins - like UART or DDR must be setup before relocation (as they have 'u-boot,dm-pre-reloc' property set in DTS). Without this change, those pins are re-configured after relocation (pre_reloc_only = 0, so we do not "continue"). Such behavior may be a problem for DDR PAD configuration, as they might be already leveled/tuned with original setup). Signed-off-by: Lukasz Majewski

dm: pinctrl: Add pinctrl_get_pin_name and pinctrl_get_pins_count

2018-11-16T21:51:55Z

Add pinctrl_get_pin_name() and pinctrl_get_pins_count() methods to obtain pin's name and pin's muxing given a pin reference. This will be used by the new pinmux command. Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

dm: pinctrl: Add get_pin_muxing() ops

2018-11-16T21:51:55Z

Add get_pin_muxing() which allows to display the muxing of a given pin belonging to a pin-controller. Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass