Add dt-schema documentation for Tesla FSD SoC clock controller. Cc: linux-fsd@xxxxxxxxx Acked-by: Stephen Boyd <sboyd@xxxxxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx> Signed-off-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx> --- .../bindings/clock/tesla,fsd-clock.yaml | 198 ++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml diff --git a/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml new file mode 100644 index 000000000000..dc808e2f8327 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml @@ -0,0 +1,198 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/tesla,fsd-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Tesla FSD (Full Self-Driving) SoC clock controller + +maintainers: + - Alim Akhtar <alim.akhtar@xxxxxxxxxxx> + - linux-fsd@xxxxxxxxx + +description: | + FSD clock controller consist of several clock management unit + (CMU), which generates clocks for various inteernal SoC blocks. + The root clock comes from external OSC clock (24 MHz). + + All available clocks are defined as preprocessor macros in + 'dt-bindings/clock/fsd-clk.h' header. + +properties: + compatible: + enum: + - tesla,fsd-clock-cmu + - tesla,fsd-clock-imem + - tesla,fsd-clock-peric + - tesla,fsd-clock-fsys0 + - tesla,fsd-clock-fsys1 + - tesla,fsd-clock-mfc + - tesla,fsd-clock-cam_csi + + clocks: + minItems: 1 + maxItems: 6 + + clock-names: + minItems: 1 + maxItems: 6 + + "#clock-cells": + const: 1 + + reg: + maxItems: 1 + +allOf: + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-cmu + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + clock-names: + items: + - const: fin_pll + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-imem + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + - description: IMEM TCU clock (from CMU_CMU) + - description: IMEM bus clock (from CMU_CMU) + - description: IMEM DMA clock (from CMU_CMU) + clock-names: + items: + - const: fin_pll + - const: dout_cmu_imem_tcuclk + - const: dout_cmu_imem_aclk + - const: dout_cmu_imem_dmaclk + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-peric + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + - description: Shared0 PLL div4 clock (from CMU_CMU) + - description: PERIC shared1 div36 clock (from CMU_CMU) + - description: PERIC shared0 div3 TBU clock (from CMU_CMU) + - description: PERIC shared0 div20 clock (from CMU_CMU) + - description: PERIC shared1 div4 DMAclock (from CMU_CMU) + clock-names: + items: + - const: fin_pll + - const: dout_cmu_pll_shared0_div4 + - const: dout_cmu_peric_shared1div36 + - const: dout_cmu_peric_shared0div3_tbuclk + - const: dout_cmu_peric_shared0div20 + - const: dout_cmu_peric_shared1div4_dmaclk + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-fsys0 + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + - description: Shared0 PLL div6 clock (from CMU_CMU) + - description: FSYS0 shared1 div4 clock (from CMU_CMU) + - description: FSYS0 shared0 div4 clock (from CMU_CMU) + clock-names: + items: + - const: fin_pll + - const: dout_cmu_pll_shared0_div6 + - const: dout_cmu_fsys0_shared1div4 + - const: dout_cmu_fsys0_shared0div4 + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-fsys1 + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + - description: FSYS1 shared0 div8 clock (from CMU_CMU) + - description: FSYS1 shared0 div4 clock (from CMU_CMU) + clock-names: + items: + - const: fin_pll + - const: dout_cmu_fsys1_shared0div8 + - const: dout_cmu_fsys1_shared0div4 + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-mfc + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + clock-names: + items: + - const: fin_pll + + - if: + properties: + compatible: + contains: + const: tesla,fsd-clock-cam_csi + then: + properties: + clocks: + items: + - description: External reference clock (24 MHz) + clock-names: + items: + - const: fin_pll + +required: + - compatible + - "#clock-cells" + - clocks + - clock-names + - reg + +additionalProperties: false + +examples: + # Clock controller node for CMU_FSYS1 + - | + #include <dt-bindings/clock/fsd-clk.h> + + clock_fsys1: clock-controller@16810000 { + compatible = "tesla,fsd-clock-fsys1"; + reg = <0x16810000 0x3000>; + #clock-cells = <1>; + + clocks = <&fin_pll>, + <&clock_cmu DOUT_CMU_FSYS1_SHARED0DIV8>, + <&clock_cmu DOUT_CMU_FSYS1_SHARED0DIV4>; + clock-names = "fin_pll", + "dout_cmu_fsys1_shared0div8", + "dout_cmu_fsys1_shared0div4"; + }; + +... -- 2.25.1
