brcm2708: update linux 4.4 patches to latest version

As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Also adds support for Raspberry Pi Compute Module 3 (untested).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 125 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0434-clk-bcm2835-Do-appropriate-name-lookups-for-DSI1-s-p.patch b/target/linux/brcm2708/patches-4.4/0434-clk-bcm2835-Do-appropriate-name-lookups-for-DSI1-s-p.patch
new file mode 100644
index 0000000000..ab7eff3cd9
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0434-clk-bcm2835-Do-appropriate-name-lookups-for-DSI1-s-p.patch
@@ -0,0 +1,125 @@
+From b0fde8ea889e47505e4112d89da4be9469a37775 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 14 Apr 2016 15:13:53 -0700
+Subject: [PATCH] clk: bcm2835: Do appropriate name lookups for DSI1's parents
+ as well.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ .../bindings/clock/brcm,bcm2835-cprman.txt         | 12 ++++-
+ drivers/clk/bcm/clk-bcm2835.c                      | 54 +++++++++++++++++-----
+ 2 files changed, 54 insertions(+), 12 deletions(-)
+
+--- a/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
++++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
+@@ -16,7 +16,17 @@ Required properties:
+ - #clock-cells:	Should be <1>. The permitted clock-specifier values can be
+ 		  found in include/dt-bindings/clock/bcm2835.h
+ - reg:		Specifies base physical address and size of the registers
+-- clocks:	The external oscillator clock phandle
++- clocks:	phandles to the parent clocks used as input to the module, in
++		  the following order:
++
++		  - External oscillator
++		  - DSI1 byte clock
++		  - DSI1 DDR2 clock
++		  - DSI1 DDR clock
++
++		  Only external oscillator is required.  The DSI clocks may
++		  not be present, in which case their children will be
++		  unusable.
+ 
+ Example:
+ 
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -297,11 +297,29 @@
+ #define LOCK_TIMEOUT_NS		100000000
+ #define BCM2835_MAX_FB_RATE	1750000000u
+ 
++/*
++ * Names of clocks used within the driver that need to be replaced
++ * with an external parent's name.  This array is in the order that
++ * the clocks node in the DT references external clocks.
++ */
++static const char *cprman_parent_names[] = {
++	"xosc",
++	"dsi1_byte",
++	"dsi1_ddr2",
++	"dsi1_ddr",
++};
++
+ struct bcm2835_cprman {
+ 	struct device *dev;
+ 	void __iomem *regs;
+ 	spinlock_t regs_lock; /* spinlock for all clocks */
+-	const char *osc_name;
++
++	/*
++	 * Real names of cprman clock parents looked up through
++	 * of_clk_get_parent_name(), which will be used in the
++	 * parent_names[] arrays for clock registration.
++	 */
++	const char *real_parent_names[ARRAY_SIZE(cprman_parent_names)];
+ 
+ 	struct clk_onecell_data onecell;
+ 	struct clk *clks[];
+@@ -1168,7 +1186,7 @@ static struct clk *bcm2835_register_pll(
+ 	memset(&init, 0, sizeof(init));
+ 
+ 	/* All of the PLLs derive from the external oscillator. */
+-	init.parent_names = &cprman->osc_name;
++	init.parent_names = &cprman->real_parent_names[0];
+ 	init.num_parents = 1;
+ 	init.name = data->name;
+ 	init.ops = &bcm2835_pll_clk_ops;
+@@ -1251,17 +1269,21 @@ static struct clk *bcm2835_register_cloc
+ 	struct bcm2835_clock *clock;
+ 	struct clk_init_data init;
+ 	const char *parents[1 << CM_SRC_BITS];
+-	size_t i;
++	size_t i, j;
+ 
+ 	/*
+-	 * Replace our "xosc" references with the oscillator's
+-	 * actual name.
++	 * Replace our strings referencing parent clocks with the
++	 * actual clock-output-name of the parent.
+ 	 */
+ 	for (i = 0; i < data->num_mux_parents; i++) {
+-		if (strcmp(data->parents[i], "xosc") == 0)
+-			parents[i] = cprman->osc_name;
+-		else
+-			parents[i] = data->parents[i];
++		parents[i] = data->parents[i];
++
++		for (j = 0; j < ARRAY_SIZE(cprman_parent_names); j++) {
++			if (strcmp(parents[i], cprman_parent_names[j]) == 0) {
++				parents[i] = cprman->real_parent_names[j];
++				break;
++			}
++		}
+ 	}
+ 
+ 	memset(&init, 0, sizeof(init));
+@@ -1883,8 +1905,18 @@ static int bcm2835_clk_probe(struct plat
+ 	if (IS_ERR(cprman->regs))
+ 		return PTR_ERR(cprman->regs);
+ 
+-	cprman->osc_name = of_clk_get_parent_name(dev->of_node, 0);
+-	if (!cprman->osc_name)
++	for (i = 0; i < ARRAY_SIZE(cprman_parent_names); i++) {
++		cprman->real_parent_names[i] =
++			of_clk_get_parent_name(dev->of_node, i);
++	}
++	/*
++	 * Make sure the external oscillator has been registered.
++	 *
++	 * The other (DSI) clocks are not present on older device
++	 * trees, which we still need to support for backwards
++	 * compatibility.
++	 */
++	if (!cprman->real_parent_names[0])
+ 		return -ENODEV;
+ 
+ 	platform_set_drvdata(pdev, cprman);