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| author | Sam Protsenko <semen.protsenko@linaro.org> | 2024-02-24 14:20:39 -0600 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2024-02-25 16:48:45 +0100 |
| commit | 76dedb9c0bb3cf3c6d639d043d7ecc98816053cc (patch) | |
| tree | 29ca032c3d906b1cd52ec734e9526d941e613e43 /Documentation/devicetree/bindings/clock | |
| parent | 2999e786d7e9596a0057d70098e339d59d7e72f9 (diff) | |
dt-bindings: clock: exynos850: Add CMU_CPUCLK0 and CMU_CPUCL1
Document CPU clock management unit compatibles and add corresponding
clock indices. Exynos850 has two CPU clusters (CL0 and CL1), each
containing 4 Cortex-A55 cores. CPU PLLs are generating main CPU clocks
for each cluster, and there are alternate ("switch") clocks that can be
used temporarily while re-configuring the PLL for the new rate. ACLK,
ATCLK, PCLKDBG and PERIPHCLK clocks are driving corresponding buses.
CLK_CLUSTERx_SCLK are actual leaf CPU clocks and should be used to
change CPU rates. Also some CoreSight clocks can be derived from
DBG_USER (debug clock).
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20240224202053.25313-2-semen.protsenko@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/clock')
| -rw-r--r-- | Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml index c752c8985a53..cdc5ded59fe5 100644 --- a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml +++ b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml @@ -36,6 +36,8 @@ properties: - samsung,exynos850-cmu-aud - samsung,exynos850-cmu-cmgp - samsung,exynos850-cmu-core + - samsung,exynos850-cmu-cpucl0 + - samsung,exynos850-cmu-cpucl1 - samsung,exynos850-cmu-dpu - samsung,exynos850-cmu-g3d - samsung,exynos850-cmu-hsi @@ -156,6 +158,46 @@ allOf: properties: compatible: contains: + const: samsung,exynos850-cmu-cpucl0 + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + - description: CPUCL0 switch clock (from CMU_TOP) + - description: CPUCL0 debug clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: dout_cpucl0_switch + - const: dout_cpucl0_dbg + + - if: + properties: + compatible: + contains: + const: samsung,exynos850-cmu-cpucl1 + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + - description: CPUCL1 switch clock (from CMU_TOP) + - description: CPUCL1 debug clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: dout_cpucl1_switch + - const: dout_cpucl1_dbg + + - if: + properties: + compatible: + contains: const: samsung,exynos850-cmu-dpu then: |