Merge remote-tracking branch 'clk/clk-bcm2835' into bcm2835-dt-next

The DT changes for enabling the clock driver on 2835 require that the
clock driver be present.  Stephen Boyd has said that these commits
would be stable for merging.
Signed-off-by: Eric Anholt <eric@anholt.net>

Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt

+Broadcom BCM2835 CPRMAN clocks
+
+This binding uses the common clock binding:
+    Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+The CPRMAN clock controller generates clocks in the audio power domain
+of the BCM2835.  There is a level of PLLs deriving from an external
+oscillator, a level of PLL dividers that produce channels off of the
+few PLLs, and a level of mostly-generic clock generators sourcing from
+the PLL channels.  Most other hardware components source from the
+clock generators, but a few (like the ARM or HDMI) will source from
+the PLL dividers directly.
+
+Required properties:
+- compatible:	Should be "brcm,bcm2835-cprman"
+- #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
+
+Example:
+
+	clk_osc: clock@3 {
+		compatible = "fixed-clock";
+		reg = <3>;
+		#clock-cells = <0>;
+		clock-output-names = "osc";
+		clock-frequency = <19200000>;
+	};
+
+	clocks: cprman@7e101000 {
+		compatible = "brcm,bcm2835-cprman";
+		#clock-cells = <1>;
+		reg = <0x7e101000 0x2000>;
+		clocks = <&clk_osc>;
+	};
+
+	i2c0: i2c@7e205000 {
+		compatible = "brcm,bcm2835-i2c";
+		reg = <0x7e205000 0x1000>;
+		interrupts = <2 21>;
+		clocks = <&clocks BCM2835_CLOCK_VPU>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};

drivers/clk/Makefile

@@ -19,7 +19,6 @@ endif
 obj-$(CONFIG_MACH_ASM9260)		+= clk-asm9260.o
 obj-$(CONFIG_COMMON_CLK_AXI_CLKGEN)	+= clk-axi-clkgen.o
 obj-$(CONFIG_ARCH_AXXIA)		+= clk-axm5516.o
-obj-$(CONFIG_ARCH_BCM2835)		+= clk-bcm2835.o
 obj-$(CONFIG_COMMON_CLK_CDCE706)	+= clk-cdce706.o
 obj-$(CONFIG_ARCH_CLPS711X)		+= clk-clps711x.o
 obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o

drivers/clk/bcm/Makefile

@@ -3,4 +3,5 @@ obj-$(CONFIG_CLK_BCM_KONA)	+= clk-kona-setup.o
 obj-$(CONFIG_CLK_BCM_KONA)	+= clk-bcm281xx.o
 obj-$(CONFIG_CLK_BCM_KONA)	+= clk-bcm21664.o
 obj-$(CONFIG_COMMON_CLK_IPROC)	+= clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o
+obj-$(CONFIG_ARCH_BCM2835)	+= clk-bcm2835.o
 obj-$(CONFIG_ARCH_BCM_CYGNUS)	+= clk-cygnus.o

drivers/clk/clk-bcm2835.c

-/*
- * Copyright (C) 2010 Broadcom
- * Copyright (C) 2012 Stephen Warren
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/clk-provider.h>
-#include <linux/clkdev.h>
-#include <linux/clk/bcm2835.h>
-#include <linux/of.h>
-
-/*
- * These are fixed clocks. They're probably not all root clocks and it may
- * be possible to turn them on and off but until this is mapped out better
- * it's the only way they can be used.
- */
-void __init bcm2835_init_clocks(void)
-{
-	struct clk *clk;
-	int ret;
-
-	clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT,
-					126000000);
-	if (IS_ERR(clk))
-		pr_err("apb_pclk not registered\n");
-
-	clk = clk_register_fixed_rate(NULL, "uart0_pclk", NULL, CLK_IS_ROOT,
-					3000000);
-	if (IS_ERR(clk))
-		pr_err("uart0_pclk not registered\n");
-	ret = clk_register_clkdev(clk, NULL, "20201000.uart");
-	if (ret)
-		pr_err("uart0_pclk alias not registered\n");
-
-	clk = clk_register_fixed_rate(NULL, "uart1_pclk", NULL, CLK_IS_ROOT,
-					125000000);
-	if (IS_ERR(clk))
-		pr_err("uart1_pclk not registered\n");
-	ret = clk_register_clkdev(clk, NULL, "20215000.uart");
-	if (ret)
-		pr_err("uart1_pclk alias not registered\n");
-}

include/dt-bindings/clock/bcm2835.h

+/*
+ * Copyright (C) 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#define BCM2835_PLLA			0
+#define BCM2835_PLLB			1
+#define BCM2835_PLLC			2
+#define BCM2835_PLLD			3
+#define BCM2835_PLLH			4
+
+#define BCM2835_PLLA_CORE		5
+#define BCM2835_PLLA_PER		6
+#define BCM2835_PLLB_ARM		7
+#define BCM2835_PLLC_CORE0		8
+#define BCM2835_PLLC_CORE1		9
+#define BCM2835_PLLC_CORE2		10
+#define BCM2835_PLLC_PER		11
+#define BCM2835_PLLD_CORE		12
+#define BCM2835_PLLD_PER		13
+#define BCM2835_PLLH_RCAL		14
+#define BCM2835_PLLH_AUX		15
+#define BCM2835_PLLH_PIX		16
+
+#define BCM2835_CLOCK_TIMER		17
+#define BCM2835_CLOCK_OTP		18
+#define BCM2835_CLOCK_UART		19
+#define BCM2835_CLOCK_VPU		20
+#define BCM2835_CLOCK_V3D		21
+#define BCM2835_CLOCK_ISP		22
+#define BCM2835_CLOCK_H264		23
+#define BCM2835_CLOCK_VEC		24
+#define BCM2835_CLOCK_HSM		25
+#define BCM2835_CLOCK_SDRAM		26
+#define BCM2835_CLOCK_TSENS		27
+#define BCM2835_CLOCK_EMMC		28
+#define BCM2835_CLOCK_PERI_IMAGE	29
+
+#define BCM2835_CLOCK_COUNT		30