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authorAnurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>2017-08-21 13:17:16 +0200
committerTejun Heo <tj@kernel.org>2017-10-23 07:09:25 -0700
commit9053f4b9855c91f8905114c2108d5397be83bcf3 (patch)
tree58009dd38124fc1133935f3fbae5fcf367c15cea /Documentation
parent05b83605992b3d6cd53f8d339842a3b4530ab6e8 (diff)
downloadlinux-9053f4b9855c91f8905114c2108d5397be83bcf3.tar.gz
devicetree: bindings: Add sata port phy config parameters in ahci-ceva
This patch adds device tree bindings for sata port phy parameters in the ahci-ceva.txt file. Signed-off-by: Anurag Kumar Vulisha <anuragku@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/ata/ahci-ceva.txt39
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ata/ahci-ceva.txt b/Documentation/devicetree/bindings/ata/ahci-ceva.txt
index 7ca8b976c13a..7561cc4de371 100644
--- a/Documentation/devicetree/bindings/ata/ahci-ceva.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-ceva.txt
@@ -5,6 +5,36 @@ Required properties:
- compatible: Compatibility string. Must be 'ceva,ahci-1v84'.
- clocks: Input clock specifier. Refer to common clock bindings.
- interrupts: Interrupt specifier. Refer to interrupt binding.
+ - ceva,p0-cominit-params: OOB timing value for COMINIT parameter for port 0.
+ - ceva,p1-cominit-params: OOB timing value for COMINIT parameter for port 1.
+ The fields for the above parameter must be as shown below:
+ ceva,pN-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
+ CINMP : COMINIT Negate Minimum Period.
+ CIBGN : COMINIT Burst Gap Nominal.
+ CIBGMX: COMINIT Burst Gap Maximum.
+ CIBGMN: COMINIT Burst Gap Minimum.
+ - ceva,p0-comwake-params: OOB timing value for COMWAKE parameter for port 0.
+ - ceva,p1-comwake-params: OOB timing value for COMWAKE parameter for port 1.
+ The fields for the above parameter must be as shown below:
+ ceva,pN-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
+ CWBGMN: COMWAKE Burst Gap Minimum.
+ CWBGMX: COMWAKE Burst Gap Maximum.
+ CWBGN: COMWAKE Burst Gap Nominal.
+ CWNMP: COMWAKE Negate Minimum Period.
+ - ceva,p0-burst-params: Burst timing value for COM parameter for port 0.
+ - ceva,p1-burst-params: Burst timing value for COM parameter for port 1.
+ The fields for the above parameter must be as shown below:
+ ceva,pN-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
+ BMX: COM Burst Maximum.
+ BNM: COM Burst Nominal.
+ SFD: Signal Failure Detection value.
+ PTST: Partial to Slumber timer value.
+ - ceva,p0-retry-params: Retry interval timing value for port 0.
+ - ceva,p1-retry-params: Retry interval timing value for port 1.
+ The fields for the above parameter must be as shown below:
+ ceva,pN-retry-params = /bits/ 16 <RIT RCT>;
+ RIT: Retry Interval Timer.
+ RCT: Rate Change Timer.
Optional properties:
- ceva,broken-gen2: limit to gen1 speed instead of gen2.
@@ -16,5 +46,14 @@ Examples:
interrupt-parent = <&gic>;
interrupts = <0 133 4>;
clocks = <&clkc SATA_CLK_ID>;
+ ceva,p0-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
+ ceva,p0-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
+ ceva,p0-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
+ ceva,p0-retry-params = /bits/ 16 <0x0216 0x7F06>;
+
+ ceva,p1-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
+ ceva,p1-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
+ ceva,p1-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
+ ceva,p1-retry-params = /bits/ 16 <0x0216 0x7F06>;
ceva,broken-gen2;
};