| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | * Hisilicon Hi3798CV200 specific extensions to the Synopsys Designware Mobile |
| 2 | Storage Host Controller |
| 3 | |
| 4 | Read synopsys-dw-mshc.txt for more details |
| 5 | |
| 6 | The Synopsys designware mobile storage host controller is used to interface |
| 7 | a SoC with storage medium such as eMMC or SD/MMC cards. This file documents |
| 8 | differences between the core Synopsys dw mshc controller properties described |
| 9 | by synopsys-dw-mshc.txt and the properties used by the Hisilicon Hi3798CV200 |
| 10 | specific extensions to the Synopsys Designware Mobile Storage Host Controller. |
| 11 | |
| 12 | Required Properties: |
| 13 | - compatible: Should contain "hisilicon,hi3798cv200-dw-mshc". |
| 14 | - clocks: A list of phandle + clock-specifier pairs for the clocks listed |
| 15 | in clock-names. |
| 16 | - clock-names: Should contain the following: |
| 17 | "ciu" - The ciu clock described in synopsys-dw-mshc.txt. |
| 18 | "biu" - The biu clock described in synopsys-dw-mshc.txt. |
| 19 | "ciu-sample" - Hi3798CV200 extended phase clock for ciu sampling. |
| 20 | "ciu-drive" - Hi3798CV200 extended phase clock for ciu driving. |
| 21 | |
| 22 | Example: |
| 23 | |
| 24 | emmc: mmc@9830000 { |
| 25 | compatible = "hisilicon,hi3798cv200-dw-mshc"; |
| 26 | reg = <0x9830000 0x10000>; |
| 27 | interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>; |
| 28 | clocks = <&crg HISTB_MMC_CIU_CLK>, |
| 29 | <&crg HISTB_MMC_BIU_CLK>, |
| 30 | <&crg HISTB_MMC_SAMPLE_CLK>, |
| 31 | <&crg HISTB_MMC_DRV_CLK>; |
| 32 | clock-names = "ciu", "biu", "ciu-sample", "ciu-drive"; |
| 33 | fifo-depth = <256>; |
| 34 | clock-frequency = <200000000>; |
| 35 | cap-mmc-highspeed; |
| 36 | mmc-ddr-1_8v; |
| 37 | mmc-hs200-1_8v; |
| 38 | non-removable; |
| 39 | bus-width = <8>; |
| 40 | }; |