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dt-bindings: clock: Add bindings for Exynos850 CMU_APM

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CMU_APM generates clocks for APM IP-core (Active Power Management). In
particular it generates RTC clocks, which are needed to enable rtc-s3c
driver on Exynos850 SoC.

Add clock indices and binding documentation for CMU_APM.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20211121232741.6967-2-semen.protsenko@linaro.org
This commit is contained in:
Sam Protsenko 2021-11-22 01:27:36 +02:00 committed by Sylwester Nawrocki
parent ac48ea3b67
commit 16e0c2474f
2 changed files with 47 additions and 1 deletions
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19
Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
View File

@ -32,6 +32,7 @@ properties:
compatible:
enum:
- samsung,exynos850-cmu-top
- samsung,exynos850-cmu-apm
- samsung,exynos850-cmu-core
- samsung,exynos850-cmu-dpu
- samsung,exynos850-cmu-hsi
@ -68,6 +69,24 @@ allOf:
items:
- const: oscclk
- if:
properties:
compatible:
contains:
const: samsung,exynos850-cmu-apm
then:
properties:
clocks:
items:
- description: External reference clock (26 MHz)
- description: CMU_APM bus clock (from CMU_TOP)
clock-names:
items:
- const: oscclk
- const: dout_clkcmu_apm_bus
- if:
properties:
compatible:

29
include/dt-bindings/clock/exynos850.h
View File

@ -55,7 +55,34 @@
#define CLK_GOUT_PERI_BUS 43
#define CLK_GOUT_PERI_UART 44
#define CLK_GOUT_PERI_IP 45
#define TOP_NR_CLK 46
#define CLK_MOUT_CLKCMU_APM_BUS 46
#define CLK_DOUT_CLKCMU_APM_BUS 47
#define CLK_GOUT_CLKCMU_APM_BUS 48
#define TOP_NR_CLK 49
/* CMU_APM */
#define CLK_RCO_I3C_PMIC 1
#define OSCCLK_RCO_APM 2
#define CLK_RCO_APM__ALV 3
#define CLK_DLL_DCO 4
#define CLK_MOUT_APM_BUS_USER 5
#define CLK_MOUT_RCO_APM_I3C_USER 6
#define CLK_MOUT_RCO_APM_USER 7
#define CLK_MOUT_DLL_USER 8
#define CLK_MOUT_CLKCMU_CHUB_BUS 9
#define CLK_MOUT_APM_BUS 10
#define CLK_MOUT_APM_I3C 11
#define CLK_DOUT_CLKCMU_CHUB_BUS 12
#define CLK_DOUT_APM_BUS 13
#define CLK_DOUT_APM_I3C 14
#define CLK_GOUT_CLKCMU_CMGP_BUS 15
#define CLK_GOUT_CLKCMU_CHUB_BUS 16
#define CLK_GOUT_RTC_PCLK 17
#define CLK_GOUT_TOP_RTC_PCLK 18
#define CLK_GOUT_I3C_PCLK 19
#define CLK_GOUT_I3C_SCLK 20
#define CLK_GOUT_SPEEDY_PCLK 21
#define APM_NR_CLK 22
/* CMU_HSI */
#define CLK_MOUT_HSI_BUS_USER 1