20402106a3
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
From 36dba68f842fac976afdd4487958d014ffdb130d Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Tue, 15 Dec 2015 15:35:57 -0800
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Subject: [PATCH 154/423] clk: bcm2835: Add bindings for the auxiliary
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peripheral clock gates.
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These will be used for enabling UART1, SPI1, and SPI2.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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Acked-by: Rob Herring <robh@kernel.org>
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Signed-off-by: Michael Turquette <mturquette@baylibre.com>
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---
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.../bindings/clock/brcm,bcm2835-aux-clock.txt | 31 ++++++++++++++++++++++
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include/dt-bindings/clock/bcm2835-aux.h | 17 ++++++++++++
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2 files changed, 48 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt
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create mode 100644 include/dt-bindings/clock/bcm2835-aux.h
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/clock/brcm,bcm2835-aux-clock.txt
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@@ -0,0 +1,31 @@
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+Broadcom BCM2835 auxiliary peripheral support
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+
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+This binding uses the common clock binding:
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+ Documentation/devicetree/bindings/clock/clock-bindings.txt
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+
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+The auxiliary peripherals (UART, SPI1, and SPI2) have a small register
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+area controlling clock gating to the peripherals, and providing an IRQ
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+status register.
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+
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+Required properties:
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+- compatible: Should be "brcm,bcm2835-aux"
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+- #clock-cells: Should be <1>. The permitted clock-specifier values can be
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+ found in include/dt-bindings/clock/bcm2835-aux.h
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+- reg: Specifies base physical address and size of the registers
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+- clocks: The parent clock phandle
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+
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+Example:
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+
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+ clocks: cprman@7e101000 {
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+ compatible = "brcm,bcm2835-cprman";
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+ #clock-cells = <1>;
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+ reg = <0x7e101000 0x2000>;
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+ clocks = <&clk_osc>;
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+ };
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+
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+ aux: aux@0x7e215004 {
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+ compatible = "brcm,bcm2835-aux";
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+ #clock-cells = <1>;
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+ reg = <0x7e215000 0x8>;
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+ clocks = <&clocks BCM2835_CLOCK_VPU>;
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+ };
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--- /dev/null
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+++ b/include/dt-bindings/clock/bcm2835-aux.h
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@@ -0,0 +1,17 @@
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+/*
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+ * Copyright (C) 2015 Broadcom Corporation
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation version 2.
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+ *
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+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
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+ * kind, whether express or implied; without even the implied warranty
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+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#define BCM2835_AUX_CLOCK_UART 0
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+#define BCM2835_AUX_CLOCK_SPI1 1
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+#define BCM2835_AUX_CLOCK_SPI2 2
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+#define BCM2835_AUX_CLOCK_COUNT 3
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