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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt b/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt new file mode 100644 index 000000000..4633697fb --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt @@ -0,0 +1,58 @@ +TI SOC based PWM Subsystem + +Required properties: +- compatible: Must be "ti,<soc>-pwmss". + for am33xx - compatible = "ti,am33xx-pwmss"; + for am4372 - compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"; + for dra746 - compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss" + +- reg: physical base address and size of the registers map. +- address-cells: Specify the number of u32 entries needed in child nodes. + Should set to 1. +- size-cells: specify number of u32 entries needed to specify child nodes size + in reg property. Should set to 1. +- ranges: describes the address mapping of a memory-mapped bus. Should set to + physical address map of child's base address, physical address within + parent's address space and length of the address map. For am33xx, + 3 set of child register maps present, ECAP register space, EQEP + register space, EHRPWM register space. + +Also child nodes should also populated under PWMSS DT node. + +Example: +epwmss0: epwmss@48300000 { /* PWMSS for am33xx */ + compatible = "ti,am33xx-pwmss"; + reg = <0x48300000 0x10>; + ti,hwmods = "epwmss0"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x48300100 0x48300100 0x80 /* ECAP */ + 0x48300180 0x48300180 0x80 /* EQEP */ + 0x48300200 0x48300200 0x80>; /* EHRPWM */ + + /* child nodes go here */ +}; + +epwmss0: epwmss@48300000 { /* PWMSS for am4372 */ + compatible = "ti,am4372-pwmss","ti,am33xx-pwmss" + reg = <0x48300000 0x10>; + ti,hwmods = "epwmss0"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x48300100 0x48300100 0x80 /* ECAP */ + 0x48300180 0x48300180 0x80 /* EQEP */ + 0x48300200 0x48300200 0x80>; /* EHRPWM */ + + /* child nodes go here */ +}; + +epwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */ + compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss"; + reg = <0x4843e000 0x30>; + ti,hwmods = "epwmss0"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + /* child nodes go here */ +}; |