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https://github.com/openwrt/openwrt.git
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25d8aa7d02
One patch that wasn't ported due to a lot of conflict is: 901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch Hopefully a correct/real fix will get developed before we switch brcm47xx to the 4.14. This IS NOT ready for switching/trying/using 4.19 yet due to some DMA regression affecting bgmac: [ 0.945472] bgmac_bcma bcma0:2: Found PHY addr: 25 [ 0.954565] libphy: bcma_mdio mii bus: probed [ 0.959486] ------------[ cut here ]------------ [ 0.964387] WARNING: CPU: 0 PID: 1 at ./include/linux/dma-mapping.h:516 bgmac_enet_probe+0x1b4/0x5c4 [ 0.973751] Modules linked in: [ 0.976913] CPU: 0 PID: 1 Comm: swapper Not tainted 4.19.9 #0 [ 0.982750] Stack : 804a0000 804597c4 00000000 00000000 80458fd8 8381bc2c 838282d4 80481a47 [ 0.991367] 8042e3ec 00000001 804d38f0 00000204 83980000 00000065 8381bbe0 6f55b24f [ 0.999975] 00000000 00000000 80520000 00002018 00000000 00000075 00000007 00000000 [ 1.008583] 00000000 80480000 000ee811 00000000 00000000 00000000 80432c00 80248db8 [ 1.017196] 00000009 00000204 83980000 803ad7b0 00000000 801feeec 00000000 804d0000 [ 1.025804] ... [ 1.028325] Call Trace: [ 1.030875] [<8000aef8>] show_stack+0x58/0x100 [ 1.035513] [<8001f8b4>] __warn+0xe4/0x118 [ 1.039708] [<8001f9a4>] warn_slowpath_null+0x48/0x64 [ 1.044935] [<80248db8>] bgmac_enet_probe+0x1b4/0x5c4 [ 1.050101] [<802498e0>] bgmac_probe+0x558/0x590 [ 1.054906] [<80252fd0>] bcma_device_probe+0x38/0x70 [ 1.060017] [<8020e1e8>] really_probe+0x170/0x2e8 [ 1.064891] [<8020e714>] __driver_attach+0xa4/0xec [ 1.069784] [<8020c1e0>] bus_for_each_dev+0x58/0xb0 [ 1.074833] [<8020d590>] bus_add_driver+0xf8/0x218 [ 1.079731] [<8020ef24>] driver_register+0xcc/0x11c [ 1.084804] [<804b54cc>] bgmac_init+0x1c/0x44 [ 1.089258] [<8000121c>] do_one_initcall+0x7c/0x1a0 [ 1.094343] [<804a1d34>] kernel_init_freeable+0x150/0x218 [ 1.099886] [<803a082c>] kernel_init+0x10/0x104 [ 1.104583] [<80005878>] ret_from_kernel_thread+0x14/0x1c [ 1.110107] ---[ end trace f441c0d873d1fb5b ]--- [ 1.114914] bgmac_bcma bcma0:2: Allocation of TX ring 0x200 failed [ 1.121215] bgmac_bcma bcma0:2: Unable to alloc memory for DMA [ 1.127626] bgmac_bcma: probe of bcma0:2 failed with error -12 [ 1.133838] bgmac_bcma: Broadcom 47xx GBit MAC driver loaded Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
102 lines
2.5 KiB
Diff
102 lines
2.5 KiB
Diff
--- a/arch/mips/bcm47xx/setup.c
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+++ b/arch/mips/bcm47xx/setup.c
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@@ -37,6 +37,7 @@
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#include <linux/ssb/ssb.h>
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#include <linux/ssb/ssb_embedded.h>
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#include <linux/bcma/bcma_soc.h>
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+#include <linux/old_gpio_wdt.h>
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#include <asm/bootinfo.h>
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#include <asm/idle.h>
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#include <asm/prom.h>
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@@ -225,6 +226,33 @@ static struct fixed_phy_status bcm47xx_f
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.duplex = DUPLEX_FULL,
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};
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+static struct gpio_wdt_platform_data gpio_wdt_data;
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+
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+static struct platform_device gpio_wdt_device = {
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+ .name = "gpio-wdt",
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+ .id = 0,
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+ .dev = {
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+ .platform_data = &gpio_wdt_data,
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+ },
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+};
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+
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+static int __init bcm47xx_register_gpio_watchdog(void)
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+{
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+ enum bcm47xx_board board = bcm47xx_board_get();
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+
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+ switch (board) {
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+ case BCM47XX_BOARD_HUAWEI_E970:
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+ pr_info("bcm47xx: detected Huawei E970 or similar, starting early gpio_wdt timer\n");
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+ gpio_wdt_data.gpio = 7;
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+ gpio_wdt_data.interval = HZ;
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+ gpio_wdt_data.first_interval = HZ / 5;
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+ return platform_device_register(&gpio_wdt_device);
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+ default:
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+ /* Nothing to do */
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+ return 0;
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+ }
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+}
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+
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static int __init bcm47xx_register_bus_complete(void)
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{
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switch (bcm47xx_bus_type) {
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@@ -244,6 +272,7 @@ static int __init bcm47xx_register_bus_c
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bcm47xx_workarounds();
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fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status, -1);
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+ bcm47xx_register_gpio_watchdog();
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return 0;
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}
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device_initcall(bcm47xx_register_bus_complete);
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--- a/arch/mips/configs/bcm47xx_defconfig
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+++ b/arch/mips/configs/bcm47xx_defconfig
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@@ -66,6 +66,7 @@ CONFIG_HW_RANDOM=y
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CONFIG_GPIO_SYSFS=y
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CONFIG_WATCHDOG=y
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CONFIG_BCM47XX_WDT=y
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+CONFIG_GPIO_WDT=y
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CONFIG_SSB_DRIVER_GIGE=y
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CONFIG_BCMA_DRIVER_GMAC_CMN=y
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CONFIG_USB=y
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--- a/drivers/ssb/embedded.c
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+++ b/drivers/ssb/embedded.c
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@@ -34,11 +34,36 @@ int ssb_watchdog_timer_set(struct ssb_bu
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}
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EXPORT_SYMBOL(ssb_watchdog_timer_set);
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+#ifdef CONFIG_BCM47XX
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+#include <bcm47xx_board.h>
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+
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+static bool ssb_watchdog_supported(void)
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+{
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+ enum bcm47xx_board board = bcm47xx_board_get();
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+
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+ /* The Huawei E970 has a hardware watchdog using a GPIO */
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+ switch (board) {
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+ case BCM47XX_BOARD_HUAWEI_E970:
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+ return false;
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+ default:
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+ return true;
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+ }
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+}
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+#else
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+static bool ssb_watchdog_supported(void)
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+{
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+ return true;
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+}
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+#endif
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+
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int ssb_watchdog_register(struct ssb_bus *bus)
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{
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struct bcm47xx_wdt wdt = {};
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struct platform_device *pdev;
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+ if (!ssb_watchdog_supported())
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+ return 0;
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+
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if (ssb_chipco_available(&bus->chipco)) {
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wdt.driver_data = &bus->chipco;
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wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
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