From: Jonathan Richardson <jonathar@broadcom.com>
To: Mark Brown <broonie@kernel.org>,
Dmitry Torokhov <dtor@google.com>,
Anatol Pomazau <anatol@google.com>
Cc: Jonathan Richardson <jonathar@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>, <linux-kernel@vger.kernel.org>,
<linux-spi@vger.kernel.org>,
bcm-kernel-feedback-list <bcm-kernel-feedback-list@broadcom.com>,
<devicetree@vger.kernel.org>, Rafal Milecki <zajec5@gmail.com>
Subject: [PATCH 1/4] ARM: dts: Add binding for Broadcom MSPI driver.
Date: Thu, 2 Apr 2015 12:23:20 -0700 [thread overview]
Message-ID: <1428002603-21892-2-git-send-email-jonathar@broadcom.com> (raw)
In-Reply-To: <1428002603-21892-1-git-send-email-jonathar@broadcom.com>
Signed-off-by: Jonathan Richardson <jonathar@broadcom.com>
---
.../devicetree/bindings/spi/brcm,mspi-spi.txt | 38 ++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
diff --git a/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
new file mode 100644
index 0000000..16164e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
@@ -0,0 +1,38 @@
+Broadcom MSPI controller
+
+Required properties:
+- compatible: Must be either "brcm,mspi" or "brcm,bcma-mspi". Use
+ "brcm,bcma-mspi" for controllers on a bcma bus and "brcm,mspi" otherwise.
+
+- reg: Physical base address and length of the controller's registers.
+
+- interrupts: The interrupt id for the controller.
+
+- #address-cells: should be 1.
+
+- #size-cells: should be 0.
+
+Optional properties:
+- clocks: The MSPI reference clock. If not provided then it is assumed a clock
+ is enabled by default and no control of clock-frequency (see below) is
+ possible.
+
+- clock-names: The name of the reference clock.
+
+- clock-frequency: Desired frequency of the clock. This will set the serial
+ clock baud rate (SPBR) based on the reference clock frequency. The frequency
+ of the SPBR is mspi_clk / (2 * SPBR) where SPBR is a value between 1-255
+ determined by the desired 'clock-frequency'. If not provided then the default
+ baud rate of the controller is used.
+
+Example:
+
+mspi@18047000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "brcm,mspi";
+ reg = <0x18047000 0x1000>;
+ clocks = <&axi41_clk>;
+ clock-names = "mspi_clk";
+ clock-frequency = <12500000>;
+};
--
1.7.9.5
next prev parent reply other threads:[~2015-04-02 19:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-02 19:23 [PATCH 0/4] Add MSPI support for Cygnus Jonathan Richardson
2015-04-02 19:23 ` Jonathan Richardson [this message]
2015-04-04 19:17 ` [PATCH 1/4] ARM: dts: Add binding for Broadcom MSPI driver Florian Fainelli
2015-04-06 18:45 ` Jonathan Richardson
2015-04-02 19:23 ` [PATCH 2/4] spi: bcm53xx: Refactor to make driver nonspecific to 53xx SoCs Jonathan Richardson
2015-04-03 13:35 ` Andy Shevchenko
2015-04-06 10:18 ` Rafał Miłecki
2015-04-06 18:58 ` Jonathan Richardson
2015-04-06 18:30 ` Jonathan Richardson
2015-04-07 8:03 ` Andy Shevchenko
2015-04-02 19:23 ` [PATCH 3/4] spi: bcm-mspi: Make BCMA optional to support non-BCMA chips Jonathan Richardson
2015-04-03 13:38 ` Andy Shevchenko
2015-04-03 17:52 ` Florian Fainelli
2015-04-06 10:36 ` Rafał Miłecki
2015-04-06 19:09 ` Jonathan Richardson
2015-04-06 18:39 ` Jonathan Richardson
2015-04-06 10:26 ` Rafał Miłecki
2015-04-06 10:26 ` Rafał Miłecki
2015-04-02 19:23 ` [PATCH 4/4] spi: bcm-mspi: Add support to set serial baud clock rate Jonathan Richardson
2015-04-04 19:12 ` Florian Fainelli
2015-04-06 9:46 ` Mark Brown
2015-04-06 18:54 ` Jonathan Richardson
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