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* ath79: reduce spi-max-frequency to 50 MHzAdrian Schmutzler2020-02-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of ebf0d8dadeca ("ath79: add new ar934x spi driver") made the SPI memory unusable on devices with very high spi-max-frequency (104 MHz). Here's how the actual clock is calculated: (AHB_CLK/((CLOCK_DIVIDER+1)*2)) where AHB_CLK is a fixed clock (e.g. 200MHz on AR9331) and CLOCK_DIVIDER is the parameter we can set. Highest clock according to this formula is AHB_CLK/2 (100MHz, but that didn't work in device tests). The next possible value is AHB_CLK/4 (50MHz). Speeds between 50 MHz and 100 MHz will be rounded down, so using values higher than 50 MHz does not provide any benefit. Consequently, this patch reduces spi-max-frequency for all devices with values higher than 50 MHz to 50 MHz (effectively, this only affects devices with 104 MHz before this patch). Tested on GL.inet GL-AR150: Boot fails with 104 MHz but is successful with both 50 MHz and 80 MHz (fast-read), where the latter two yield identical read speeds. Fixes: ebf0d8dadeca ("ath79: add new ar934x spi driver") Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
* ath79: DTS file style update and harmonizationAdrian Schmutzler2019-11-061-5/+8
| | | | | | | | | | | | | | | | | | This applies several style adjustments that have been requested in recent reviews to older DTS files. Despite making the code base more consistent, this will also help to reduce review time when DTSes are copy/pasted. Applied changes: - Rename gpio-keys/gpio-leds to keys/leds - Remove node labels that are not used - Use label property for partitions - Prefix led node labels with "led_" - Remove redundant includes - Harmonize new lines after status property - Several smaller style fixes Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
* ath79: convert devices to interrupt-driven gpio-keysAdrian Schmutzler2019-09-221-2/+1
| | | | | | | | | | | | | This converts all remaining devices to use interrupt-driven gpio-keys compatible instead of gpio-keys-polled. The poll-interval is removed. Only ar7240_netgear_wnr612-v2 is kept at gpio-keys-polled, as this one is using ath9k keys. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Tested-by: Karl Palsson <karlp@etactica.com> Tested-by: Dmitry Tunin <hanipouspilot@gmail.com>
* treewide: dts: Remove default-state=off property from all gpio LED nodesPetr Štetiar2018-12-171-2/+0
| | | | | | | | | | | | | | | | | | >From the Documentation/devicetree/bindings/leds/common.txt: - default-state : The initial state of the LED. Valid values are "on", "off", and "keep". If the LED is already on or off and the default-state property is set the to same value, then no glitch should be produced where the LED momentarily turns off (or on). The "keep" setting will keep the LED at whatever its current state is, without producing a glitch. The default is off if this property is not present. So setting the default-state of the LEDs to `off` is redundant as `off` is default LED state anyway. We should remove it as almost every new PR/patch submission contains this property by default which seems to be just copy&paste from some DTS file already present in the tree. Signed-off-by: Petr Štetiar <ynezz@true.cz>
* ath79: Define firmware partition format to all boards where applicablePetr Štetiar2018-12-061-0/+1
| | | | | | | | | | Parsing "firmware" partition (to create kernel + rootfs) was implemented using OpenWrt downstream code enabled by CONFIG_MTD_SPLIT_FIRMWARE. With recent upstream mtd changes we can do it in a more clean way for DTS targets. It just requires adding a proper "compatible" string to the "firmware" partition node. Signed-off-by: Petr Štetiar <ynezz@true.cz>
* ath79: fix PQI Air Pen supportMathias Kresin2018-10-281-0/+147
Use the correct dts filename. It has to be <soc>_<manufacturer>_<device>. Signed-off-by: Mathias Kresin <dev@kresin.me>