[PATCH v4 3/4] dt-bindings: mmc: loongson,ls2k0500-mmc: Add compatible for Loongson-2K2000
From: Binbin Zhou <zhoubinbin@loongson.cn>
Date: 2025-06-24 11:58:34
Also in:
linux-mmc, loongarch
Subsystem:
loongson-2 soc series mmc/sd/sdio controller driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Binbin Zhou, Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add the devicetree compatible for Loongson-2K2000 EMMC/SD/SDIO controller. Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> --- .../bindings/mmc/loongson,ls2k0500-mmc.yaml | 47 ++++++++++++++++++- 1 file changed, 45 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/loongson,ls2k0500-mmc.yaml b/Documentation/devicetree/bindings/mmc/loongson,ls2k0500-mmc.yaml
index f2f10b2c618c..c142421bc723 100644
--- a/Documentation/devicetree/bindings/mmc/loongson,ls2k0500-mmc.yaml
+++ b/Documentation/devicetree/bindings/mmc/loongson,ls2k0500-mmc.yaml@@ -9,6 +9,9 @@ title: The SD/SDIO/eMMC host controller for Loongson-2K family SoCs description: The MMC host controller on the Loongson-2K0500/2K1000 (using an externally shared apbdma controller) provides the SD and SDIO device interfaces. + The two MMC host controllers on the Loongson-2K2000 are similar, + except that they use internal exclusive DMA. one controller provides + the eMMC interface and the other provides the SD/SDIO interface. maintainers: - Binbin Zhou <zhoubinbin@loongson.cn>
@@ -21,8 +24,10 @@ properties: enum: - loongson,ls2k0500-mmc - loongson,ls2k1000-mmc + - loongson,ls2k2000-mmc reg: + minItems: 1 items: - description: Loongson-2K MMC controller registers. - description: APB DMA config register for Loongson-2K MMC controller.
@@ -44,11 +49,31 @@ required: - reg - interrupts - clocks - - dmas - - dma-names unevaluatedProperties: false +if: + properties: + compatible: + contains: + enum: + - loongson,ls2k0500-mmc + - loongson,ls2k1000-mmc + +then: + properties: + reg: + minItems: 2 + + required: + - dmas + - dma-names + +else: + properties: + reg: + maxItems: 1 + examples: - | #include <dt-bindings/gpio/gpio.h>
@@ -67,3 +92,21 @@ examples: bus-width = <4>; cd-gpios = <&gpio0 22 GPIO_ACTIVE_LOW>; }; + + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/clock/loongson,ls2k-clk.h> + + mmc@79990000 { + compatible = "loongson,ls2k2000-mmc"; + reg = <0x79990000 0x1000>; + interrupt-parent = <&pic>; + interrupts = <51 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk LOONGSON2_EMMC_CLK>; + bus-width = <8>; + non-removable; + cap-mmc-highspeed; + mmc-hs200-1_8v; + no-sd; + no-sdio; + };
--
2.47.1