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[6/6] dt-bindings: spi: sprd: Change the hwlock support to be optional

Message ID 23d51f5d9c9cc647ad0c5a1fb950d3d9fb9c1303.1564125131.git.baolin.wang@linaro.org
State Accepted
Commit 70f69f481b87da0614360e57e05a3ba962d60439
Headers show
Series [1/6] spi: sprd: adi: Remove redundant address bits setting | expand

Commit Message

(Exiting) Baolin Wang July 26, 2019, 7:20 a.m. UTC
No need to add hardware spinlock proctection due to add multiple
msater channel, so change it to be optional in documentation.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

---
 .../devicetree/bindings/spi/spi-sprd-adi.txt       |   11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

-- 
1.7.9.5

Comments

Mark Brown July 26, 2019, 11:29 a.m. UTC | #1
On Fri, Jul 26, 2019 at 03:20:53PM +0800, Baolin Wang wrote:
> No need to add hardware spinlock proctection due to add multiple

> msater channel, so change it to be optional in documentation.


Please use subject lines matching the style for the subsystem.  This
makes it easier for people to identify relevant patches.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt b/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt
index 8de589b..2567c82 100644
--- a/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt
+++ b/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt
@@ -25,18 +25,23 @@  data by ADI software channels at the same time, or two parallel routine of setti
 ADI registers will make ADI controller registers chaos to lead incorrect results.
 Then we need one hardware spinlock to synchronize between the multiple subsystems.
 
+The new version ADI controller supplies multiple master channels for different
+subsystem accessing, that means no need to add hardware spinlock to synchronize,
+thus change the hardware spinlock support to be optional to keep backward
+compatibility.
+
 Required properties:
 - compatible: Should be "sprd,sc9860-adi".
 - reg: Offset and length of ADI-SPI controller register space.
-- hwlocks: Reference to a phandle of a hwlock provider node.
-- hwlock-names: Reference to hwlock name strings defined in the same order
-	as the hwlocks, should be "adi".
 - #address-cells: Number of cells required to define a chip select address
 	on the ADI-SPI bus. Should be set to 1.
 - #size-cells: Size of cells required to define a chip select address size
 	on the ADI-SPI bus. Should be set to 0.
 
 Optional properties:
+- hwlocks: Reference to a phandle of a hwlock provider node.
+- hwlock-names: Reference to hwlock name strings defined in the same order
+	as the hwlocks, should be "adi".
 - sprd,hw-channels: This is an array of channel values up to 49 channels.
 	The first value specifies the hardware channel id which is used to
 	transfer data triggered by hardware automatically, and the second