Register regions of the LLCC banks are located at separate addresses. Currently, the binding just lists the LLCC0 base address and specifies the size to cover all banks. This is not the correct approach since, there are holes and other registers located in between.
So let's specify the base address of each LLCC bank. It should be noted that the bank count differs for each SoC, so that also needs to be taken into account in the binding.
Cc: stable@vger.kernel.org # 4.19 Fixes: 7e5700ae64f6 ("dt-bindings: Documentation for qcom, llcc") Reported-by: Parikshit Pareek quic_ppareek@quicinc.com Signed-off-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org --- .../bindings/arm/msm/qcom,llcc.yaml | 125 ++++++++++++++++-- 1 file changed, 114 insertions(+), 11 deletions(-)
diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml b/Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml index d1df49ffcc1b..7f694baa017c 100644 --- a/Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml +++ b/Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml @@ -33,14 +33,12 @@ properties: - qcom,sm8550-llcc
reg: - items: - - description: LLCC base register region - - description: LLCC broadcast base register region + minItems: 2 + maxItems: 9
reg-names: - items: - - const: llcc_base - - const: llcc_broadcast_base + minItems: 2 + maxItems: 9
interrupts: maxItems: 1 @@ -50,15 +48,120 @@ required: - reg - reg-names
+allOf: + - if: + properties: + compatible: + contains: + enum: + - qcom,sc7180-llcc + - qcom,sm6350-llcc + then: + properties: + reg: + items: + - description: LLCC0 base register region + - description: LLCC broadcast base register region + reg-names: + items: + - const: llcc0_base + - const: llcc_broadcast_base + + - if: + properties: + compatible: + contains: + enum: + - qcom,sc7280-llcc + then: + properties: + reg: + items: + - description: LLCC0 base register region + - description: LLCC1 base register region + - description: LLCC broadcast base register region + reg-names: + items: + - const: llcc0_base + - const: llcc1_base + - const: llcc_broadcast_base + + - if: + properties: + compatible: + contains: + enum: + - qcom,sc8180x-llcc + - qcom,sc8280xp-llcc + then: + properties: + reg: + items: + - description: LLCC0 base register region + - description: LLCC1 base register region + - description: LLCC2 base register region + - description: LLCC3 base register region + - description: LLCC4 base register region + - description: LLCC5 base register region + - description: LLCC6 base register region + - description: LLCC7 base register region + - description: LLCC broadcast base register region + reg-names: + items: + - const: llcc0_base + - const: llcc1_base + - const: llcc2_base + - const: llcc3_base + - const: llcc4_base + - const: llcc5_base + - const: llcc6_base + - const: llcc7_base + - const: llcc_broadcast_base + + - if: + properties: + compatible: + contains: + enum: + - qcom,sdm845-llcc + - qcom,sm8150-llcc + - qcom,sm8250-llcc + - qcom,sm8350-llcc + - qcom,sm8450-llcc + then: + properties: + reg: + items: + - description: LLCC0 base register region + - description: LLCC1 base register region + - description: LLCC2 base register region + - description: LLCC3 base register region + - description: LLCC broadcast base register region + reg-names: + items: + - const: llcc0_base + - const: llcc1_base + - const: llcc2_base + - const: llcc3_base + - const: llcc_broadcast_base + additionalProperties: false
examples: - | #include <dt-bindings/interrupt-controller/arm-gic.h>
- system-cache-controller@1100000 { - compatible = "qcom,sdm845-llcc"; - reg = <0x1100000 0x200000>, <0x1300000 0x50000> ; - reg-names = "llcc_base", "llcc_broadcast_base"; - interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>; + soc { + #address-cells = <2>; + #size-cells = <2>; + + system-cache-controller@1100000 { + compatible = "qcom,sdm845-llcc"; + reg = <0 0x01100000 0 0x50000>, <0 0x01180000 0 0x50000>, + <0 0x01200000 0 0x50000>, <0 0x01280000 0 0x50000>, + <0 0x01300000 0 0x50000>; + reg-names = "llcc0_base", "llcc1_base", "llcc2_base", + "llcc3_base", "llcc_broadcast_base"; + interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>; + }; };