Re: [PATCH v3 02/32] devicetree: bindings: scsi: HiSi SAS

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On 09/11/2015 18:01, Rob Herring wrote:
On Tue, Nov 10, 2015 at 12:32:07AM +0800, John Garry wrote:
Add devicetree bindings for HiSilicon SAS driver.

Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
---
  .../devicetree/bindings/scsi/hisilicon-sas.txt     | 81 ++++++++++++++++++++++
  1 file changed, 81 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/scsi/hisilicon-sas.txt

diff --git a/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt b/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt
new file mode 100644
index 0000000..2333cc3
--- /dev/null
+++ b/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt
@@ -0,0 +1,81 @@
+* HiSilicon SAS controller
+
+The HiSilicon SAS controller supports SAS/SATA.
+
+Main node required properties:
+  - compatible : value should be as follows:
+	(a) "hisilicon,sas-controller-v1" for v1 of HiSilicon SAS controller IP

Please do a more specific compatible string with the SOC part number.
Same versions of IP blocks can have different integration/process
features/bugs.


How about "hisilicon,hip05-sas-v1"?

+  - sas-addr : array of 8 bytes for host SAS address
+  - reg : Address and length of the SAS register
+  - hisilicon,sas-syscon: phandle of syscon used for sas control
+  - ctrl-reset-reg : offset to controller reset register in ctrl reg
+  - ctrl-reset-sts-reg : offset to controller reset status register in ctrl reg
+  - ctrl-clock-ena-reg : offset to controller clock enable register in ctrl reg
+  - queue-count : number of delivery and completion queues in the controller
+  - phy-count : number of phys accessible by the controller
+  - interrupts : Interrupts for phys, completion queues, and fatal
+		sources; the interrupts are ordered in 3 groups, as follows:
+		  - Phy interrupts
+		  - Completion queue interrupts
+		  - Fatal interrupts
+		Phy interrupts : Each phy has 3 interrupt sources:
+			- broadcast
+			- phyup
+			- abnormal
+		The phy interrupts are ordered into groups of 3 per phy
+		(broadcast, phyup, and abnormal) in increasing order.
+		Completion queue interrupts : each completion queue has 1
+			interrupt source. The interrupts are ordered in
+			increasing order.
+		Fatal interrupts : the fatal interrupts are ordered as follows:
+			- ECC
+			- AXI bus
+
+* HiSilicon SAS syscon
+
+Required properties:
+- compatible: should be "hisilicon,sas-ctrl", "syscon"

Please add a more specific compatible here too.

We plan to remove this node now as it will be defined in the platform dt bindings:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt#n174


Rob

Thanks,
John


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