Somehow EMSDP & IoT DK boards were skipped on ARC boads conversion
to DM MMC. So doing it now.
Signed-off-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
---
Changes v2 -> v3:
* Fixed SDIO bus interface unit clock (BIU)
According to the documentation SDIO BIU clock is just "apb_clk"
which is 50 MHz by default while SDIO CIU clock is "sdio_ref_clk"
and by default is 100 MHz.
Changes v1 -> v2:
* FIFO size on IoTDK is 128 bytes as compared to 256 on EM SDP.
That gave us timeouts on data read with some cards. Fixed now.
arch/arc/dts/emsdp.dts | 23 ++++++++++++++++++
arch/arc/dts/iot_devkit.dts | 22 ++++++++++++++++++
board/synopsys/emsdp/emsdp.c | 29 -----------------------
board/synopsys/iot_devkit/iot_devkit.c | 32 --------------------------
configs/emsdp_defconfig | 2 ++
configs/iot_devkit_defconfig | 2 ++
6 files changed, 49 insertions(+), 61 deletions(-)
diff --git a/arch/arc/dts/emsdp.dts b/arch/arc/dts/emsdp.dts
index d307b95d8e..dbebdb4e76 100644
--- a/arch/arc/dts/emsdp.dts
+++ b/arch/arc/dts/emsdp.dts
@@ -32,4 +32,27 @@
reg-shift = <2>;
reg-io-width = <4>;
};
+
+ mmcclk_biu: mmcclk-biu {
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ #clock-cells = <0>;
+ };
+
+ mmcclk_ciu: mmcclk-ciu {
+ compatible = "fixed-clock";
+ clock-frequency = <100000000>;
+ #clock-cells = <0>;
+ };
+
+ mmc: mmc0@f0010000 {
+ compatible = "snps,dw-mshc";
+ reg = <0xf0010000 0x400>;
+ bus-width = <4>;
+ fifo-depth = <256>;
+ clocks = <&mmcclk_biu>, <&mmcclk_ciu>;
+ clock-names = "biu", "ciu";
+ max-frequency = <25000000>;
+ };
+
};
diff --git a/arch/arc/dts/iot_devkit.dts b/arch/arc/dts/iot_devkit.dts
index ebf5a950f0..c0173fa5ab 100644
--- a/arch/arc/dts/iot_devkit.dts
+++ b/arch/arc/dts/iot_devkit.dts
@@ -42,4 +42,26 @@
compatible = "nop-phy";
#phy-cells = <0>;
};
+
+ mmcclk_biu: mmcclk-biu {
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ #clock-cells = <0>;
+ };
+
+ mmcclk_ciu: mmcclk-ciu {
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ #clock-cells = <0>;
+ };
+
+ mmc: mmc0@f000b000 {
+ compatible = "snps,dw-mshc";
+ reg = <0xf000b000 0x400>;
+ bus-width = <4>;
+ fifo-depth = <128>;
+ clocks = <&mmcclk_biu>, <&mmcclk_ciu>;
+ clock-names = "biu", "ciu";
+ max-frequency = <25000000>;
+ };
};
diff --git a/board/synopsys/emsdp/emsdp.c b/board/synopsys/emsdp/emsdp.c
index 7a3fd5b7f2..5ba9f862e1 100644
--- a/board/synopsys/emsdp/emsdp.c
+++ b/board/synopsys/emsdp/emsdp.c
@@ -85,35 +85,6 @@ int board_early_init_r(void)
return 0;
}
-int board_mmc_init(bd_t *bis)
-{
- struct dwmci_host *host = NULL;
-
- host = malloc(sizeof(struct dwmci_host));
- if (!host) {
- printf("dwmci_host malloc fail!\n");
- return 1;
- }
-
- memset(host, 0, sizeof(struct dwmci_host));
- host->name = "Synopsys Mobile storage";
- host->ioaddr = SDIO_BASE;
- host->buswidth = 4;
- host->dev_index = 0;
- host->bus_hz = 50000000;
-
- add_dwmci(host, host->bus_hz / 2, 400000);
-
- return 0;
-}
-
-int board_mmc_getcd(struct mmc *mmc)
-{
- struct dwmci_host *host = mmc->priv;
-
- return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
-}
-
#define CREG_BASE 0xF0001000
#define CREG_BOOT (void *)(CREG_BASE + 0x0FF0)
#define CREG_IP_SW_RESET (void *)(CREG_BASE + 0x0FF0)
diff --git a/board/synopsys/iot_devkit/iot_devkit.c b/board/synopsys/iot_devkit/iot_devkit.c
index 8424e09bd3..9dbdc128f8 100644
--- a/board/synopsys/iot_devkit/iot_devkit.c
+++ b/board/synopsys/iot_devkit/iot_devkit.c
@@ -145,38 +145,6 @@ int mach_cpu_init(void)
return set_cpu_freq(gd->cpu_clk);
}
-#define ARC_PERIPHERAL_BASE 0xF0000000
-#define SDIO_BASE (ARC_PERIPHERAL_BASE + 0xB000)
-
-int board_mmc_init(bd_t *bis)
-{
- struct dwmci_host *host = NULL;
-
- host = malloc(sizeof(struct dwmci_host));
- if (!host) {
- printf("dwmci_host malloc fail!\n");
- return -ENOMEM;
- }
-
- memset(host, 0, sizeof(struct dwmci_host));
- host->name = "Synopsys Mobile storage";
- host->ioaddr = (void *)SDIO_BASE;
- host->buswidth = 4;
- host->dev_index = 0;
- host->bus_hz = 50000000;
-
- add_dwmci(host, host->bus_hz / 2, 400000);
-
- return 0;
-}
-
-int board_mmc_getcd(struct mmc *mmc)
-{
- struct dwmci_host *host = mmc->priv;
-
- return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
-}
-
#define IOTDK_RESET_SEQ 0x55AA6699
void reset_cpu(ulong addr)
diff --git a/configs/emsdp_defconfig b/configs/emsdp_defconfig
index 1eca23fa95..09fe388e58 100644
--- a/configs/emsdp_defconfig
+++ b/configs/emsdp_defconfig
@@ -24,7 +24,9 @@ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
# CONFIG_NET is not set
CONFIG_DM=y
CONFIG_MMC=y
+CONFIG_DM_MMC=y
CONFIG_MMC_DW=y
+CONFIG_MMC_DW_SNPS=y
CONFIG_DM_SERIAL=y
CONFIG_SYS_NS16550=y
CONFIG_FS_FAT_MAX_CLUSTSIZE=32768
diff --git a/configs/iot_devkit_defconfig b/configs/iot_devkit_defconfig
index 24bbe3fc5d..42278d4fb1 100644
--- a/configs/iot_devkit_defconfig
+++ b/configs/iot_devkit_defconfig
@@ -29,7 +29,9 @@ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
# CONFIG_NET is not set
CONFIG_DM=y
CONFIG_MMC=y
+CONFIG_DM_MMC=y
CONFIG_MMC_DW=y
+CONFIG_MMC_DW_SNPS=y
CONFIG_DM_SERIAL=y
CONFIG_SYS_NS16550=y
CONFIG_USB=y
--
2.17.1
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