Firstly, the upstream patch for sun4i-drm ensures the HDMI output is initialized successfully.
Secondly, patching drm_atomic_helper_connector_hdmi_check() avoids a null pointer dereference at shutdown or reboot
Although my initial testing appeared to be a success, subsequent
testing finds it to fail more often than it works.
Back to square one.
Signed-off-by: Patrick Yavitz <pyavitz@gmail.com>
* correct system patch used for aliasing on Allwinner A10, A13 and A20 to ensure consistent allocation of device IDs
* Re-introduce spi overlays for each bus so that when used in conjuction with a device driver overlay, the pins are correctly muxed into SPI mode
* Ensure SPI overlay patches are applied
* Fix typo in patch name
* Move alias patches further down series.conf to ensure they are only called after the intial overlay creation
* Rephrase subject heading to improve clarity
* Fix interface aliases on Allwinner A10 for I2C, SPI and UART
* Fix interface aliases on Allwinner A13 for I2C and UART
* Fix interface aliases on Allwinner A20 for I2C, SPI and UART
* Fix SPI 2 pin names in line with latest revision of the Allwinner A10 device tree
* Fix SPI 2 pin names in line with latest revision of the Allwinner A20 device tree
* Create overlays for each bus on the Allwinner A20 so that the corresponding pins can be set into spi mode
* Create overlays for each bus on the Allwinner A10 so that the corresponding pins can be set into spi mode
* Condense alias path corrections into the intial overlay creation patch instead of applying a further patch on topof it to enact these corrections
* Remove references to our no longer needed addtional overlays
* rename to include 'arm-dts..' for consistency with other dts related patches
* Fix mistake in SPI overlay patches naming which leads to build failure
* Fix typo in application of spi2 overlay that was leading to compilation failure
* Amend the assigned aliases in overlay creation so that the kernel correctly maps the bus/port number to match the physical hardware numbering
* Update pin labels for SPI 2 to use current names as defined in sun4i-a10.dtsi and sun7i-a20.dtsi. fixed typo in sun5i-a13-spi-spidev as compatibility field should be sun5i-a13
* Re-introduce compilation of spi bus overlays on Allwinner A10 and A20 SOCs which are necessary to ensure that the pins are correctly muxed into spi mode
When starting a GPU with a power domain, it is necessary
to additionally control the switching on and off of the clock
in the GPU driver.
The driver is currently waiting for a response when it is
turned on, but it is not there, and this causes the OS to freeze.
The complete set will be added later after testing.
