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- From 85e7001af712694f81195fe9389deb14aa562da3 Mon Sep 17 00:00:00 2001
- From: Eric Anholt <eric@anholt.net>
- Date: Tue, 15 Dec 2015 15:35:57 -0800
- Subject: [PATCH] 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>
- ---
- .../bindings/clock/brcm,bcm2835-aux-clock.txt | 31 ++++++++++++++++++++++
- include/dt-bindings/clock/bcm2835-aux.h | 17 ++++++++++++
- 2 files changed, 48 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt
- create mode 100644 include/dt-bindings/clock/bcm2835-aux.h
- --- /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>;
- + };
- --- /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
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