clk: bcm2835: Add binding docs for the new platform clock driver.

Previously we've only supported a few fixed clocks based on
assumptions about how the firmware sets up the clocks, but this
binding will let us control the actual (audio power domain) clock
manager.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
new file mode 100644 (file)
index 0000000..e56a1df
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt
@@ -0,0 +1,45 @@
+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>;
+       };

diff --git a/include/dt-bindings/clock/bcm2835.h b/include/dt-bindings/clock/bcm2835.h
new file mode 100644 (file)
index 0000000..d323efa
--- /dev/null
+++ b/include/dt-bindings/clock/bcm2835.h
@@ -0,0 +1,47 @@
+/*
+ * 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