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
+ - 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"
+- reg: offset and length of the syscon sas-ctrl registers
+
+
+Example:
+ sas_ctrl0: sas_ctrl@c0000000 {
+ compatible = "hisilicon,sas-ctrl", "syscon";
+ reg = <0x0 0xc0000000 0x0 0x10000>;
+ };
+
+ sas0: sas@c1000000 {
+ compatible = "hisilicon,sas-controller-v1";
+ sas-addr = [50 01 88 20 16 00 00 0a];
+ reg = <0x0 0xc1000000 0x0 0x10000>;
+ hisilicon,sas-syscon = <&sas_ctrl0>;
+ ctrl-reset-reg = <0xa60>;
+ ctrl-reset-sts-reg = <0x5a30>;
+ ctrl-clock-ena-reg = <0x338>;
+ queue-count = <32>;
+ phy-count = <8>;
+ dma-coherent;
+ interrupt-parent = <&mbigen_dsa>;
+ interrupts = <259 4>,<263 4>,<264 4>,/* phy0 */
+ <269 4>,<273 4>,<274 4>,/* phy1 */
+ <279 4>,<283 4>,<284 4>,/* phy2 */
+ <289 4>,<293 4>,<294 4>,/* phy3 */
+ <299 4>,<303 4>,<304 4>,/* phy4 */
+ <309 4>,<313 4>,<314 4>,/* phy5 */
+ <319 4>,<323 4>,<324 4>,/* phy6 */
+ <329 4>,<333 4>,<334 4>,/* phy7 */
+ <336 1>,<337 1>,<338 1>,/* cq0-2 */
+ <339 1>,<340 1>,<341 1>,/* cq3-5 */
+ <342 1>,<343 1>,<344 1>,/* cq6-8 */
+ <345 1>,<346 1>,<347 1>,/* cq9-11 */
+ <348 1>,<349 1>,<350 1>,/* cq12-14 */
+ <351 1>,<352 1>,<353 1>,/* cq15-17 */
+ <354 1>,<355 1>,<356 1>,/* cq18-20 */
+ <357 1>,<358 1>,<359 1>,/* cq21-23 */
+ <360 1>,<361 1>,<362 1>,/* cq24-26 */
+ <363 1>,<364 1>,<365 1>,/* cq27-29 */
+ <366 1>,<367 1>/* cq30-31 */
+ <376 4>,/* fatal ecc */
+ <381 4>;/* fatal axi */
+ status = "disabled";
+ };
--
1.9.1
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