diff options
| author | Prashanth Bhatta <bhattap@codeaurora.org> | 2017-02-22 16:58:52 -0800 |
|---|---|---|
| committer | Prashanth Bhatta <bhattap@codeaurora.org> | 2017-02-24 16:34:23 -0800 |
| commit | 16adafc201dd5e8fd1a08e55fbd3947d530cba00 (patch) | |
| tree | babd98095f7945bc55e75edaa1d8a84f966e1020 /Documentation | |
| parent | f419890fd6558b73f835457246666d6ab8c34d7a (diff) | |
icnss: Vote for hardware resources
During recovery, there are cases where in WLAN driver running on
APPS can access CE register causing exceptions because of
hardware in reset state. Fix the issue by not resetting the
hardware in WLAN firmware during recovery but halt the CE and MAC
and reset the hardware only when reinitialization starts. For
this to work, platform driver needs to keep the clock and
regulator votes so that WLAN hardware will not go into weird
state because of not resetting it but cutting the resources.
CRs-fixed: 2011579
Change-Id: Ie61366b166f15f8d5927ad911089fc693a455319
Signed-off-by: Prashanth Bhatta <bhattap@codeaurora.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/cnss/icnss.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/cnss/icnss.txt b/Documentation/devicetree/bindings/cnss/icnss.txt index a1cbf480890a..4b70e670798d 100644 --- a/Documentation/devicetree/bindings/cnss/icnss.txt +++ b/Documentation/devicetree/bindings/cnss/icnss.txt @@ -12,9 +12,17 @@ Required properties: - reg-names: Names of the memory regions defined in reg entry - interrupts: Copy engine interrupt table - qcom,wlan-msa-memory: MSA memory size + - clocks: List of clock phandles + - clock-names: List of clock names corresponding to the "clocks" property - iommus: SMMUs and corresponding Stream IDs needed by WLAN - qcom,wlan-smmu-iova-address: I/O virtual address range as <start length> format to be used for allocations associated between WLAN and SMMU + - <supply-name>-supply: phandle to the regulator device tree node + Required "supply-name" is "vdd-0.8-cx-mx". + - qcom,<supply>-config: Specifies voltage levels for supply. Should be + specified in pairs (min, max), units uV. There can + be optional load in uA and Regulator settle delay in + uS. Optional properties: - qcom,icnss-vadc: VADC handle for vph_pwr read APIs. @@ -27,6 +35,8 @@ Example: compatible = "qcom,icnss"; reg = <0x0a000000 0x1000000>; reg-names = "membase"; + clocks = <&clock_gcc clk_aggre2_noc_clk>; + clock-names = "smmu_aggre2_noc_clk"; iommus = <&anoc2_smmu 0x1900>, <&anoc2_smmu 0x1901>; qcom,wlan-smmu-iova-address = <0 0x10000000>; @@ -45,4 +55,6 @@ Example: <0 141 0 /* CE11 */ >; qcom,wlan-msa-memory = <0x200000>; qcom,smmu-s1-bypass; + vdd-0.8-cx-mx-supply = <&pm8998_l5>; + qcom,vdd-0.8-cx-mx-config = <800000 800000 2400 1000>; }; |