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path: root/drivers/i2c/meson_i2c.c
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2019-04-10i2c: meson: add configurable divider factorsGuillaume La Roque
This patch add support for I2C controller in Meson-AXG SoC, Due to the IP changes between I2C controller, we need to introduce a compatible data to make the divider factor configurable. backport from linux: 931b18e92cd0 ("2c: meson: add configurable divider factors") Signed-off-by: Guillaume La Roque <glaroque@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2018-06-19meson: use the clock driverBeniamino Galvani
Use the clk framework to initialize clocks from drivers that need them instead of having hardcoded frequencies and initializations from board code. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-12-07i2c: meson: add some commentsBeniamino Galvani
Add some comment describing the purpose of struct members and functions. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de>
2017-12-07i2c: meson: fix return codes on errorBeniamino Galvani
Change meson_i2c_xfer_msg() to return -EREMOTEIO in case of NACK, as done by other drivers. Also, don't change the return error in meson_i2c_xfer(). Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de>
2017-12-07i2c: meson: reduce timeoutBeniamino Galvani
The datasheet doesn't specify a suggested timeout and 500ms seems very long: reduce it to 100ms. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de>
2017-11-20i2c: add Amlogic Meson driverBeniamino Galvani
Add a driver for the I2C controller available on Amlogic Meson SoCs. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>