From: Baolin Wang <baolin.wang@linaro.org>
To: broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com
Cc: orsonzhai@gmail.com, zhang.lyra@gmail.com,
lanqing.liu@spreadtrum.com, baolin.wang@linaro.org,
linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] dt-bindings: spi: Add Spreadtrum SPI controller documentation
Date: Tue, 7 Aug 2018 18:43:37 +0800 [thread overview]
Message-ID: <64681bf903104c8a02f118294e616e2a12a5ebe4.1533638405.git.baolin.wang@linaro.org> (raw)
From: Lanqing Liu <lanqing.liu@spreadtrum.com>
This patch adds the binding documentation for Spreadtrum SPI
controller device.
Signed-off-by: Lanqing Liu <lanqing.liu@spreadtrum.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
Documentation/devicetree/bindings/spi/spi-sprd.txt | 31 ++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/spi-sprd.txt
diff --git a/Documentation/devicetree/bindings/spi/spi-sprd.txt b/Documentation/devicetree/bindings/spi/spi-sprd.txt
new file mode 100644
index 0000000..06ff746
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-sprd.txt
@@ -0,0 +1,31 @@
+Spreadtrum SPI Controller
+
+Required properties:
+- compatible: Should be "sprd,sc9860-spi".
+- reg: Offset and length of SPI controller register space.
+- interrupts: Should contain SPI interrupt.
+- clock-names: Should contain following entries:
+ "spi" for SPI clock,
+ "source" for SPI source (parent) clock,
+ "enable" for SPI module enable clock.
+- clocks: List of clock input name strings sorted in the same order
+ as the clock-names property.
+- #address-cells: The number of cells required to define a chip select
+ address on the SPI bus. Should be set to 1.
+- #size-cells: Should be set to 0.
+
+Optional properties:
+- sprd,spi-interval: Specify the intervals of two SPI frames, which can be
+ converted to the delay clock cycles = interval number * 4 + 10.
+
+Example:
+spi0: spi@70a00000{
+ compatible = "sprd,sc9860-spi";
+ reg = <0 0x70a00000 0 0x1000>;
+ interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ clock-names = "spi", "source","enable";
+ clocks = <&clk_spi0>, <&ext_26m>, <&clk_ap_apb_gates 5>;
+ sprd,spi-interval = <9>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
--
1.7.9.5
next reply other threads:[~2018-08-07 10:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-07 10:43 Baolin Wang [this message]
2018-08-07 10:43 ` [PATCH 2/2] spi: sprd: Add SPI driver for Spreadtrum SC9860 Baolin Wang
2018-08-07 14:24 ` Mark Brown
2018-08-08 2:45 ` Baolin Wang
2018-08-08 9:31 ` Mark Brown
2018-08-08 9:33 ` Baolin Wang
2018-08-07 17:10 ` Trent Piepho
2018-08-08 3:19 ` Baolin Wang
2018-08-08 19:08 ` Trent Piepho
2018-08-09 3:23 ` Baolin Wang
2018-08-07 13:41 ` [PATCH 1/2] dt-bindings: spi: Add Spreadtrum SPI controller documentation Mark Brown
2018-08-08 2:26 ` Baolin Wang
2018-08-08 9:50 ` Mark Brown
2018-08-08 10:35 ` Baolin Wang
2018-08-08 10:54 ` Mark Brown
2018-08-08 11:07 ` Baolin Wang
2018-08-08 18:57 ` Trent Piepho
2018-08-09 3:03 ` Baolin Wang
2018-08-14 20:27 ` Rob Herring
2018-08-15 2:17 ` Baolin Wang
2018-08-14 20:21 ` Rob Herring
2018-08-15 1:44 ` Baolin Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=64681bf903104c8a02f118294e616e2a12a5ebe4.1533638405.git.baolin.wang@linaro.org \
--to=baolin.wang@linaro.org \
--cc=broonie@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=lanqing.liu@spreadtrum.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=orsonzhai@gmail.com \
--cc=robh+dt@kernel.org \
--cc=zhang.lyra@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).