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path: root/drivers/i2c/sun8i_rsb.c
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2024-05-20Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"Tom Rini
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-19Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""Tom Rini
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-07i2c: Remove <common.h> and add needed includesTom Rini
Remove <common.h> from this driver directory and when needed add missing include files directly. Reviewed-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Rini <trini@konsulko.com>
2023-10-22pinctrl: sunxi: remove GPIO_EXTRA_HEADERAndre Przywara
U-Boot's generic GPIO_EXTRA_HEADER is a convenience symbol to allow code to more easily include platform specific GPIO headers. This should not be needed in a DM world anymore, since the generic GPIO framework handles that nicely. For Allwinner boards we still need to deal with non-DM GPIO in the SPL, but this should become the exception, not the rule. Make this more obvious by removing the definition of GPIO_EXTRA_HEADER, and just force every legacy user of platform specific GPIO to include the new sunxi_gpio.h header explicitly. Everyone doing so should feel ashamed and should find a way to avoid it from now on. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Tested-by: Samuel Holland <samuel@sholland.org>
2022-04-04i2c: sun8i_rsb: Add support for DM clocks and resetsSamuel Holland
Currently, clock/reset setup for this device is handled by a platform-specific function and is intermixed with non-DM pinctrl setup. Use the devicetree to get clocks/resets, which disentagles it from the pinctrl setup in preparation for moving to DM_PINCTRL. This also has the added benefit of picking the right clock/reset bits for H6 and new SoCs that have a rearranged PRCM MMIO space. Signed-off-by: Samuel Holland <samuel@sholland.org> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2022-04-04i2c: sun8i_rsb: Initialize chips in .child_pre_probeSamuel Holland
Chips attached to the RSB bus require an initialization command before they can be used. (Specifically, this command programs the chip's runtime address.) The driver does this in its .probe_chip hook, under the assumption that .probe_chip is called during child probe. This is not the case; .probe_chip is only called by dm_i2c_probe, which is intended for use by board-level code, not for chips with OF nodes. Since this initialization command must be run before a child chip can be used, do it before probing each child. Signed-off-by: Samuel Holland <samuel@sholland.org> Acked-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2022-04-04i2c: sun8i_rsb: Only do non-DM pin setup for non-DM I2CSamuel Holland
When the DM_I2C driver is loaded, the pin setup is done automatically from the device tree by the pinctrl driver. Clean up the code in the process: remove #ifdefs and recognize that the pin configuration is the same for all sun8i/sun50i SoCs, not just those which select CONFIG_MACH_SUN8I. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-12i2c: Add a DM_I2C driver for the sun8i RSB controllerSamuel Holland
This bus controller is used to communicate with an X-Powers AXP PMIC. Currently, various drivers access PMIC registers through a platform- specific non-DM "pmic_bus" interface, which depends on the legacy I2C framework. In order to convert those drivers to use DM_PMIC, this bus needs a DM_I2C driver. Refactor the rsb functions to take the base address as a parameter, and implement both the existing interface (which is still needed in SPL) and the DM_I2C interface on top of them. The register for switching between I2C/P2WI/RSB mode is the same across all PMIC variants, so move that to the common header. There are only a couple of pairs of hardware/runtime addresses used across all PMIC variants. So far the code expected only the "primary" pair, but some PMICs like the AXP305 and AXP805 use the secondary pair, so add support for that to the DM driver as well. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>