| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | MediaTek Timers |
| 2 | --------------- |
| 3 | |
| 4 | MediaTek SoCs have different timers on different platforms, |
| 5 | - CPUX (ARM/ARM64 System Timer) |
| 6 | - GPT (General Purpose Timer) |
| 7 | - SYST (System Timer) |
| 8 | |
| 9 | The proper timer will be selected automatically by driver. |
| 10 | |
| 11 | Required properties: |
| 12 | - compatible should contain: |
| 13 | For those SoCs that use GPT |
| 14 | * "mediatek,mt2701-timer" for MT2701 compatible timers (GPT) |
| 15 | * "mediatek,mt6580-timer" for MT6580 compatible timers (GPT) |
| 16 | * "mediatek,mt6582-timer" for MT6582 compatible timers (GPT) |
| 17 | * "mediatek,mt6589-timer" for MT6589 compatible timers (GPT) |
| 18 | * "mediatek,mt7623-timer" for MT7623 compatible timers (GPT) |
| 19 | * "mediatek,mt8127-timer" for MT8127 compatible timers (GPT) |
| 20 | * "mediatek,mt8135-timer" for MT8135 compatible timers (GPT) |
| 21 | * "mediatek,mt8173-timer" for MT8173 compatible timers (GPT) |
| 22 | * "mediatek,mt8516-timer" for MT8516 compatible timers (GPT) |
| 23 | * "mediatek,mt6577-timer" for MT6577 and all above compatible timers (GPT) |
| 24 | |
| 25 | For those SoCs that use SYST |
| 26 | * "mediatek,mt8183-timer" for MT8183 compatible timers (SYST) |
| 27 | * "mediatek,mt8186-timer" for MT8186 compatible timers (SYST) |
| 28 | * "mediatek,mt8188-timer" for MT8188 compatible timers (SYST) |
| 29 | * "mediatek,mt8192-timer" for MT8192 compatible timers (SYST) |
| 30 | * "mediatek,mt8195-timer" for MT8195 compatible timers (SYST) |
| 31 | * "mediatek,mt7629-timer" for MT7629 compatible timers (SYST) |
| 32 | * "mediatek,mt6765-timer" for MT6765 and all above compatible timers (SYST) |
| 33 | |
| 34 | For those SoCs that use CPUX |
| 35 | * "mediatek,mt6795-systimer" for MT6795 compatible timers (CPUX) |
| 36 | * "mediatek,mt8365-systimer" for MT8365 compatible timers (CPUX) |
| 37 | |
| 38 | - reg: Should contain location and length for timer register. |
| 39 | - clocks: Should contain system clock. |
| 40 | |
| 41 | Examples: |
| 42 | |
| 43 | timer@10008000 { |
| 44 | compatible = "mediatek,mt6577-timer"; |
| 45 | reg = <0x10008000 0x80>; |
| 46 | interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>; |
| 47 | clocks = <&system_clk>; |
| 48 | }; |