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| author | Eric Anholt <eric@anholt.net> | 2015-12-16 00:35:57 +0100 |
|---|---|---|
| committer | Michael Turquette <mturquette@baylibre.com> | 2015-12-23 01:46:58 +0100 |
| commit | 9f697864b37158b06ace36a34b02ea43cbb4fd04 (patch) | |
| tree | 301e8fc2c5f670830a01ffd95dbb007bac4edb51 | |
| parent | Linux 4.4-rc1 (diff) | |
| download | linux-9f697864b37158b06ace36a34b02ea43cbb4fd04.tar.xz linux-9f697864b37158b06ace36a34b02ea43cbb4fd04.zip | |
clk: bcm2835: Add bindings for the auxiliary peripheral clock gates.
These will be used for enabling UART1, SPI1, and SPI2.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
| -rw-r--r-- | Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt | 31 | ||||
| -rw-r--r-- | include/dt-bindings/clock/bcm2835-aux.h | 17 |
2 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt b/Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt new file mode 100644 index 000000000000..7a837d2182ac --- /dev/null +++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt @@ -0,0 +1,31 @@ +Broadcom BCM2835 auxiliary peripheral support + +This binding uses the common clock binding: + Documentation/devicetree/bindings/clock/clock-bindings.txt + +The auxiliary peripherals (UART, SPI1, and SPI2) have a small register +area controlling clock gating to the peripherals, and providing an IRQ +status register. + +Required properties: +- compatible: Should be "brcm,bcm2835-aux" +- #clock-cells: Should be <1>. The permitted clock-specifier values can be + found in include/dt-bindings/clock/bcm2835-aux.h +- reg: Specifies base physical address and size of the registers +- clocks: The parent clock phandle + +Example: + + clocks: cprman@7e101000 { + compatible = "brcm,bcm2835-cprman"; + #clock-cells = <1>; + reg = <0x7e101000 0x2000>; + clocks = <&clk_osc>; + }; + + aux: aux@0x7e215004 { + compatible = "brcm,bcm2835-aux"; + #clock-cells = <1>; + reg = <0x7e215000 0x8>; + clocks = <&clocks BCM2835_CLOCK_VPU>; + }; diff --git a/include/dt-bindings/clock/bcm2835-aux.h b/include/dt-bindings/clock/bcm2835-aux.h new file mode 100644 index 000000000000..d91156e2658d --- /dev/null +++ b/include/dt-bindings/clock/bcm2835-aux.h @@ -0,0 +1,17 @@ +/* + * 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_AUX_CLOCK_UART 0 +#define BCM2835_AUX_CLOCK_SPI1 1 +#define BCM2835_AUX_CLOCK_SPI2 2 +#define BCM2835_AUX_CLOCK_COUNT 3 |