@@ -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
maxItems: 2
interrupts:
@@ -42,11 +47,31 @@ 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>
@@ -65,3 +90,21 @@ 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;
+ };
Add the devicetree compatible for Loongson-2K2000 EMMC/SD/SDIO controller. Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> --- .../bindings/mmc/loongson,ls2k-mmc.yaml | 47 ++++++++++++++++++- 1 file changed, 45 insertions(+), 2 deletions(-)