brcm2708: rename all patches from raspberrypi git tree to use 950 prefix

Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support

Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 124 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/950-0023-watchdog-bcm2835-Support-setting-reboot-partition.patch b/target/linux/brcm2708/patches-4.9/950-0023-watchdog-bcm2835-Support-setting-reboot-partition.patch
new file mode 100644
index 0000000000..392ce70232
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0023-watchdog-bcm2835-Support-setting-reboot-partition.patch
@@ -0,0 +1,124 @@
+From 0e690096e05c3b4e806381ff38124dbdae3ba877 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 7 Oct 2016 16:50:59 +0200
+Subject: [PATCH] watchdog: bcm2835: Support setting reboot partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The Raspberry Pi firmware looks at the RSTS register to know which
+partition to boot from. The reboot syscall command
+LINUX_REBOOT_CMD_RESTART2 supports passing in a string argument.
+
+Add support for passing in a partition number 0..63 to boot from.
+Partition 63 is a special partiton indicating halt.
+If the partition doesn't exist, the firmware falls back to partition 0.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/watchdog/bcm2835_wdt.c | 61 +++++++++++++++++++++++++-----------------
+ 1 file changed, 36 insertions(+), 25 deletions(-)
+
+--- a/drivers/watchdog/bcm2835_wdt.c
++++ b/drivers/watchdog/bcm2835_wdt.c
+@@ -35,13 +35,7 @@
+ #define PM_RSTC_WRCFG_SET		0x00000030
+ #define PM_RSTC_WRCFG_FULL_RESET	0x00000020
+ #define PM_RSTC_RESET			0x00000102
+-
+-/*
+- * The Raspberry Pi firmware uses the RSTS register to know which partiton
+- * to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
+- * Partiton 63 is a special partition used by the firmware to indicate halt.
+- */
+-#define PM_RSTS_RASPBERRYPI_HALT	0x555
++#define PM_RSTS_PARTITION_CLR		0xfffffaaa
+ 
+ #define SECS_TO_WDOG_TICKS(x) ((x) << 16)
+ #define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
+@@ -111,15 +105,28 @@ static struct watchdog_device bcm2835_wd
+ 	.timeout =	WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
+ };
+ 
+-static int
+-bcm2835_restart(struct notifier_block *this, unsigned long mode, void *cmd)
++/*
++ * The Raspberry Pi firmware uses the RSTS register to know which partiton
++ * to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
++ * Partiton 63 is a special partition used by the firmware to indicate halt.
++ */
++
++static void bcm2835_restart(struct bcm2835_wdt *wdt, u8 partition)
+ {
+-	struct bcm2835_wdt *wdt = container_of(this, struct bcm2835_wdt,
+-					       restart_handler);
+-	u32 val;
++	u32 val, rsts;
++
++	rsts = (partition & BIT(0)) | ((partition & BIT(1)) << 1) |
++	       ((partition & BIT(2)) << 2) | ((partition & BIT(3)) << 3) |
++	       ((partition & BIT(4)) << 4) | ((partition & BIT(5)) << 5);
++
++	val = readl_relaxed(wdt->base + PM_RSTS);
++	val &= PM_RSTS_PARTITION_CLR;
++	val |= PM_PASSWORD | rsts;
++	writel_relaxed(val, wdt->base + PM_RSTS);
+ 
+ 	/* use a timeout of 10 ticks (~150us) */
+ 	writel_relaxed(10 | PM_PASSWORD, wdt->base + PM_WDOG);
++
+ 	val = readl_relaxed(wdt->base + PM_RSTC);
+ 	val &= PM_RSTC_WRCFG_CLR;
+ 	val |= PM_PASSWORD | PM_RSTC_WRCFG_FULL_RESET;
+@@ -127,6 +134,20 @@ bcm2835_restart(struct notifier_block *t
+ 
+ 	/* No sleeping, possibly atomic. */
+ 	mdelay(1);
++}
++
++static int bcm2835_restart_notifier_call(struct notifier_block *this,
++					 unsigned long mode, void *cmd)
++{
++	struct bcm2835_wdt *wdt = container_of(this, struct bcm2835_wdt,
++					       restart_handler);
++	unsigned long long val;
++	u8 partition = 0;
++
++	if (cmd && !kstrtoull(cmd, 0, &val) && val <= 63)
++		partition = val;
++
++	bcm2835_restart(wdt, partition);
+ 
+ 	return 0;
+ }
+@@ -142,19 +163,9 @@ static void bcm2835_power_off(void)
+ 		of_find_compatible_node(NULL, NULL, "brcm,bcm2835-pm-wdt");
+ 	struct platform_device *pdev = of_find_device_by_node(np);
+ 	struct bcm2835_wdt *wdt = platform_get_drvdata(pdev);
+-	u32 val;
+-
+-	/*
+-	 * We set the watchdog hard reset bit here to distinguish this reset
+-	 * from the normal (full) reset. bootcode.bin will not reboot after a
+-	 * hard reset.
+-	 */
+-	val = readl_relaxed(wdt->base + PM_RSTS);
+-	val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
+-	writel_relaxed(val, wdt->base + PM_RSTS);
+ 
+-	/* Continue with normal reset mechanism */
+-	bcm2835_restart(&wdt->restart_handler, REBOOT_HARD, NULL);
++	/* Partition 63 tells the firmware that this is a halt */
++	bcm2835_restart(wdt, 63);
+ }
+ 
+ static int bcm2835_wdt_probe(struct platform_device *pdev)
+@@ -188,7 +199,7 @@ static int bcm2835_wdt_probe(struct plat
+ 		return err;
+ 	}
+ 
+-	wdt->restart_handler.notifier_call = bcm2835_restart;
++	wdt->restart_handler.notifier_call = bcm2835_restart_notifier_call;
+ 	wdt->restart_handler.priority = 128;
+ 	register_restart_handler(&wdt->restart_handler);
+ 	if (pm_power_off == NULL)