target/linux/brcm2708/patches-4.4/0155-clk-bcm2835-Add-bindings-for-the-auxiliary-periphera.patch

   1 From 0316ebbf545738333e188197d196b618c17b171e Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Tue, 15 Dec 2015 15:35:57 -0800
   4 Subject: [PATCH 155/232] clk: bcm2835: Add bindings for the auxiliary
   5  peripheral clock gates.
   6
   7 These will be used for enabling UART1, SPI1, and SPI2.
   8
   9 Signed-off-by: Eric Anholt <eric@anholt.net>
  10 Acked-by: Rob Herring <robh@kernel.org>
  11 Signed-off-by: Michael Turquette <mturquette@baylibre.com>
  12 ---
  13  .../bindings/clock/brcm,bcm2835-aux-clock.txt      | 31 ++++++++++++++++++++++
  14  include/dt-bindings/clock/bcm2835-aux.h            | 17 ++++++++++++
  15  2 files changed, 48 insertions(+)
  16  create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt
  17  create mode 100644 include/dt-bindings/clock/bcm2835-aux.h
  18
  19 --- /dev/null
  20 +++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt
  21 @@ -0,0 +1,31 @@
  22 +Broadcom BCM2835 auxiliary peripheral support
  23 +
  24 +This binding uses the common clock binding:
  25 +    Documentation/devicetree/bindings/clock/clock-bindings.txt
  26 +
  27 +The auxiliary peripherals (UART, SPI1, and SPI2) have a small register
  28 +area controlling clock gating to the peripherals, and providing an IRQ
  29 +status register.
  30 +
  31 +Required properties:
  32 +- compatible:  Should be "brcm,bcm2835-aux"
  33 +- #clock-cells:        Should be <1>. The permitted clock-specifier values can be
  34 +                 found in include/dt-bindings/clock/bcm2835-aux.h
  35 +- reg:         Specifies base physical address and size of the registers
  36 +- clocks:      The parent clock phandle
  37 +
  38 +Example:
  39 +
  40 +       clocks: cprman@7e101000 {
  41 +               compatible = "brcm,bcm2835-cprman";
  42 +               #clock-cells = <1>;
  43 +               reg = <0x7e101000 0x2000>;
  44 +               clocks = <&clk_osc>;
  45 +       };
  46 +
  47 +       aux: aux@0x7e215004 {
  48 +               compatible = "brcm,bcm2835-aux";
  49 +               #clock-cells = <1>;
  50 +               reg = <0x7e215000 0x8>;
  51 +               clocks = <&clocks BCM2835_CLOCK_VPU>;
  52 +       };
  53 --- /dev/null
  54 +++ b/include/dt-bindings/clock/bcm2835-aux.h
  55 @@ -0,0 +1,17 @@
  56 +/*
  57 + * Copyright (C) 2015 Broadcom Corporation
  58 + *
  59 + * This program is free software; you can redistribute it and/or
  60 + * modify it under the terms of the GNU General Public License as
  61 + * published by the Free Software Foundation version 2.
  62 + *
  63 + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  64 + * kind, whether express or implied; without even the implied warranty
  65 + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  66 + * GNU General Public License for more details.
  67 + */
  68 +
  69 +#define BCM2835_AUX_CLOCK_UART         0
  70 +#define BCM2835_AUX_CLOCK_SPI1         1
  71 +#define BCM2835_AUX_CLOCK_SPI2         2
  72 +#define BCM2835_AUX_CLOCK_COUNT                3