diff options
| -rw-r--r-- | target/linux/generic/hack-5.4/991-platform-x86-pcengines-apuv2-revert-simswitch.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.4/991-platform-x86-pcengines-apuv2-revert-simswitch.patch b/target/linux/generic/hack-5.4/991-platform-x86-pcengines-apuv2-revert-simswitch.patch new file mode 100644 index 0000000000..84a4191157 --- /dev/null +++ b/target/linux/generic/hack-5.4/991-platform-x86-pcengines-apuv2-revert-simswitch.patch @@ -0,0 +1,56 @@ +From 8c9254d41881c81bea610193c6ac59c8cb8b79fe Mon Sep 17 00:00:00 2001 +From: Florian Eckert <fe@dev.tdt.de> +Date: Fri, 27 Mar 2020 16:11:55 +0100 +Subject: [PATCH] Revert "platform/x86: pcengines-apuv2: wire up simswitch gpio + as led" + +This reverts commit 5037d4ddda31c2dbbb018109655f61054b1756dc. + +Commit message from linux: +The APU3+ boards have two SIM sockets, while only one of them +can be routed to the mpcie slots at a time. Selection is done +via simswap gpio. + +We currently don't have a fitting subsystem for those cases yet, +so just wire it up to a LED for the time being. While this isn't +really semantically correct, it's a good compromise. + +Explanation why this does not work: +This change connects the simswap to the LED subsystem of the kernel. +From my point of view, it's nonsense. If we do it this way, then this +can be switched relatively easily via the LED subsystem (trigger: +none/default-on) and that is dangerous! If this is used, it would be +unfavorable, since there is also another trigger (trigger: heartbeat/netdev). +This LED also appears in the LuCI and can therefore be switched by the user. + +Therefore, this simswap GPIO should remain in the GPIO +subsystem and be switched via it and not be connected to the LED +subsystem. To avoid the problems mentioned above. The LED subsystem is +not made for this and it is not a good compromise, but rather dangerous. + +Signed-off-by: Florian Eckert <fe@dev.tdt.de> +--- + drivers/platform/x86/pcengines-apuv2.c | 5 +---- + 1 file changed, 1 insertion(+), 4 deletions(-) + +--- a/drivers/platform/x86/pcengines-apuv2.c ++++ b/drivers/platform/x86/pcengines-apuv2.c +@@ -77,8 +77,7 @@ static const struct amd_fch_gpio_pdata b + static const struct gpio_led apu2_leds[] = { + { .name = "apu:green:1" }, + { .name = "apu:green:2" }, +- { .name = "apu:green:3" }, +- { .name = "apu:simswap" }, ++ { .name = "apu:green:3" } + }; + + static const struct gpio_led_platform_data apu2_leds_pdata = { +@@ -95,8 +94,6 @@ static struct gpiod_lookup_table gpios_l + NULL, 1, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3, + NULL, 2, GPIO_ACTIVE_LOW), +- GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_SIMSWAP, +- NULL, 3, GPIO_ACTIVE_LOW), + } + }; + |