mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 15:20:41 +00:00
dt-bindings: clock: add Exynos Auto v9 SoC CMU bindings
Add dt-schema for Exynos Auto v9 SoC clock controller. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220504075154.58819-3-chanho61.park@samsung.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
parent
680e1c8370
commit
e61492e478
1 changed files with 219 additions and 0 deletions
|
@ -0,0 +1,219 @@
|
|||
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/clock/samsung,exynosautov9-clock.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Samsung Exynos Auto v9 SoC clock controller
|
||||
|
||||
maintainers:
|
||||
- Chanho Park <chanho61.park@samsung.com>
|
||||
- Chanwoo Choi <cw00.choi@samsung.com>
|
||||
- Krzysztof Kozlowski <krzk@kernel.org>
|
||||
- Sylwester Nawrocki <s.nawrocki@samsung.com>
|
||||
- Tomasz Figa <tomasz.figa@gmail.com>
|
||||
|
||||
description: |
|
||||
Exynos Auto v9 clock controller is comprised of several CMU units, generating
|
||||
clocks for different domains. Those CMU units are modeled as separate device
|
||||
tree nodes, and might depend on each other. Root clocks in that clock tree are
|
||||
two external clocks:: OSCCLK/XTCXO (26 MHz) and RTCCLK/XrtcXTI (32768 Hz).
|
||||
The external OSCCLK must be defined as fixed-rate clock in dts.
|
||||
|
||||
CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and
|
||||
dividers; all other clocks of function blocks (other CMUs) are usually
|
||||
derived from CMU_TOP.
|
||||
|
||||
Each clock is assigned an identifier and client nodes can use this identifier
|
||||
to specify the clock which they consume. All clocks available for usage
|
||||
in clock consumer nodes are defined as preprocessor macros in
|
||||
'include/dt-bindings/clock/samsung,exynosautov9.h' header.
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
enum:
|
||||
- samsung,exynosautov9-cmu-top
|
||||
- samsung,exynosautov9-cmu-busmc
|
||||
- samsung,exynosautov9-cmu-core
|
||||
- samsung,exynosautov9-cmu-fsys2
|
||||
- samsung,exynosautov9-cmu-peric0
|
||||
- samsung,exynosautov9-cmu-peric1
|
||||
- samsung,exynosautov9-cmu-peris
|
||||
|
||||
clocks:
|
||||
minItems: 1
|
||||
maxItems: 5
|
||||
|
||||
clock-names:
|
||||
minItems: 1
|
||||
maxItems: 5
|
||||
|
||||
"#clock-cells":
|
||||
const: 1
|
||||
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
allOf:
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-top
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-busmc
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_BUSMC bus clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_busmc_bus
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-core
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_CORE bus clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_core_bus
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-fsys2
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_FSYS2 bus clock (from CMU_TOP)
|
||||
- description: UFS clock (from CMU_TOP)
|
||||
- description: Ethernet clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_fsys2_bus
|
||||
- const: dout_fsys2_clkcmu_ufs_embd
|
||||
- const: dout_fsys2_clkcmu_ethernet
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-peric0
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_PERIC0 bus clock (from CMU_TOP)
|
||||
- description: PERIC0 IP clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_peric0_bus
|
||||
- const: dout_clkcmu_peric0_ip
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-peric1
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_PERIC1 bus clock (from CMU_TOP)
|
||||
- description: PERIC1 IP clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_peric1_bus
|
||||
- const: dout_clkcmu_peric1_ip
|
||||
|
||||
- if:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: samsung,exynosautov9-cmu-peris
|
||||
|
||||
then:
|
||||
properties:
|
||||
clocks:
|
||||
items:
|
||||
- description: External reference clock (26 MHz)
|
||||
- description: CMU_PERIS bus clock (from CMU_TOP)
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: oscclk
|
||||
- const: dout_clkcmu_peris_bus
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- "#clock-cells"
|
||||
- clocks
|
||||
- clock-names
|
||||
- reg
|
||||
|
||||
additionalProperties: false
|
||||
|
||||
examples:
|
||||
# Clock controller node for CMU_FSYS2
|
||||
- |
|
||||
#include <dt-bindings/clock/samsung,exynosautov9.h>
|
||||
|
||||
cmu_fsys2: clock-controller@17c00000 {
|
||||
compatible = "samsung,exynosautov9-cmu-fsys2";
|
||||
reg = <0x17c00000 0x8000>;
|
||||
#clock-cells = <1>;
|
||||
|
||||
clocks = <&xtcxo>,
|
||||
<&cmu_top DOUT_CLKCMU_FSYS2_BUS>,
|
||||
<&cmu_top DOUT_CLKCMU_FSYS2_UFS_EMBD>,
|
||||
<&cmu_top DOUT_CLKCMU_FSYS2_ETHERNET>;
|
||||
clock-names = "oscclk",
|
||||
"dout_clkcmu_fsys2_bus",
|
||||
"dout_fsys2_clkcmu_ufs_embd",
|
||||
"dout_fsys2_clkcmu_ethernet";
|
||||
};
|
||||
|
||||
...
|
Loading…
Reference in a new issue