diff options
| -rw-r--r-- | doc/device-tree-bindings/serial/msm-serial.txt | 4 | ||||
| -rw-r--r-- | drivers/serial/serial_msm.c | 6 |
2 files changed, 9 insertions, 1 deletions
diff --git a/doc/device-tree-bindings/serial/msm-serial.txt b/doc/device-tree-bindings/serial/msm-serial.txt index 48b8428..dca9957 100644 --- a/doc/device-tree-bindings/serial/msm-serial.txt +++ b/doc/device-tree-bindings/serial/msm-serial.txt @@ -4,3 +4,7 @@ Required properties: - compatible: must be "qcom,msm-uartdm-v1.4" - reg: start address and size of the registers - clock: interface clock (must accept baudrate as a frequency) + +Optional properties: +- bit-rate: Data Mover bit rate register value + (If not defined then 0xCC is used as default) diff --git a/drivers/serial/serial_msm.c b/drivers/serial/serial_msm.c index a1c9abc..c8946c3 100644 --- a/drivers/serial/serial_msm.c +++ b/drivers/serial/serial_msm.c @@ -61,6 +61,7 @@ struct msm_serial_data { phys_addr_t base; unsigned chars_cnt; /* number of buffered chars */ uint32_t chars_buf; /* buffered chars */ + uint32_t clk_bit_rate; /* data mover mode bit rate register value */ }; static int msm_serial_fetch(struct udevice *dev) @@ -190,7 +191,7 @@ static int msm_uart_clk_init(struct udevice *dev) static void uart_dm_init(struct msm_serial_data *priv) { - writel(UART_DM_CLK_RX_TX_BIT_RATE, priv->base + UARTDM_CSR); + writel(priv->clk_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); @@ -223,6 +224,9 @@ static int msm_serial_ofdata_to_platdata(struct udevice *dev) if (priv->base == FDT_ADDR_T_NONE) return -EINVAL; + priv->clk_bit_rate = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), + "bit-rate", UART_DM_CLK_RX_TX_BIT_RATE); + return 0; } |