diff options
Diffstat (limited to 'drivers/serial/serial_msm.c')
| -rw-r--r-- | drivers/serial/serial_msm.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/serial/serial_msm.c b/drivers/serial/serial_msm.c index a4279accb4..c462394dbd 100644 --- a/drivers/serial/serial_msm.c +++ b/drivers/serial/serial_msm.c @@ -16,6 +16,7 @@ #include <watchdog.h> #include <asm/io.h> #include <linux/compiler.h> +#include <dm/pinctrl.h> /* Serial registers - this driver works in uartdm mode*/ @@ -25,6 +26,9 @@ #define UARTDM_RXFS 0x50 /* RX channel status register */ #define UARTDM_RXFS_BUF_SHIFT 0x7 /* Number of bytes in the packing buffer */ #define UARTDM_RXFS_BUF_MASK 0x7 +#define UARTDM_MR1 0x00 +#define UARTDM_MR2 0x04 +#define UARTDM_CSR 0xA0 #define UARTDM_SR 0xA4 /* Status register */ #define UARTDM_SR_RX_READY (1 << 0) /* Word is the receiver FIFO */ @@ -45,6 +49,10 @@ #define UARTDM_TF 0x100 /* UART Transmit FIFO register */ #define UARTDM_RF 0x140 /* UART Receive FIFO register */ +#define UART_DM_CLK_RX_TX_BIT_RATE 0xCC +#define MSM_BOOT_UART_DM_8_N_1_MODE 0x34 +#define MSM_BOOT_UART_DM_CMD_RESET_RX 0x10 +#define MSM_BOOT_UART_DM_CMD_RESET_TX 0x20 DECLARE_GLOBAL_DATA_PTR; @@ -179,6 +187,14 @@ static int msm_uart_clk_init(struct udevice *dev) return 0; } +static void uart_dm_init(struct msm_serial_data *priv) +{ + writel(UART_DM_CLK_RX_TX_BIT_RATE, priv->base + UARTDM_CSR); + writel(0x0, priv->base + UARTDM_MR1); + writel(MSM_BOOT_UART_DM_8_N_1_MODE, priv->base + UARTDM_MR2); + writel(MSM_BOOT_UART_DM_CMD_RESET_RX, priv->base + UARTDM_CR); + writel(MSM_BOOT_UART_DM_CMD_RESET_TX, priv->base + UARTDM_CR); +} static int msm_serial_probe(struct udevice *dev) { int ret; @@ -192,12 +208,8 @@ static int msm_serial_probe(struct udevice *dev) if (ret) return ret; - if (readl(priv->base + UARTDM_SR) & UARTDM_SR_UART_OVERRUN) - writel(UARTDM_CR_CMD_RESET_ERR, priv->base + UARTDM_CR); - - writel(0, priv->base + UARTDM_IMR); - writel(UARTDM_CR_CMD_STALE_EVENT_DISABLE, priv->base + UARTDM_CR); - msm_serial_fetch(dev); + pinctrl_select_state(dev, "uart"); + uart_dm_init(priv); return 0; } |