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This value is selected from device tree property "secondary-baudrate" which is then used to download FW chunks, and as operational baudrate after HCI initialization is done. Signed-off-by: Neeraj Sanjay Kale --- drivers/bluetooth/btnxpuart.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 6b13feed06df..e2cd568bdffe 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -73,7 +73,8 @@ #define FW_AUTH_ENC 0xc0 #define HCI_NXP_PRI_BAUDRATE 115200 -#define HCI_NXP_SEC_BAUDRATE 3000000 +#define HCI_NXP_SEC_BAUDRATE_3M 3000000 +#define HCI_NXP_SEC_BAUDRATE_4M 4000000 #define MAX_FW_FILE_NAME_LEN 50 @@ -201,6 +202,7 @@ struct btnxpuart_dev { u32 new_baudrate; u32 current_baudrate; u32 fw_init_baudrate; + u32 secondary_baudrate; enum bootloader_param_change timeout_changed; enum bootloader_param_change baudrate_changed; bool helper_downloaded; @@ -802,7 +804,10 @@ static bool nxp_fw_change_baudrate(struct hci_dev *hdev, u16 req_len) nxpdev->fw_v3_offset_correction += req_len; } else if (req_len == sizeof(uart_config)) { uart_config.clkdiv.address = __cpu_to_le32(clkdivaddr); - uart_config.clkdiv.value = __cpu_to_le32(0x00c00000); + if (nxpdev->new_baudrate == HCI_NXP_SEC_BAUDRATE_4M) + uart_config.clkdiv.value = __cpu_to_le32(0x01000000); + else + uart_config.clkdiv.value = __cpu_to_le32(0x00c00000); uart_config.uartdiv.address = __cpu_to_le32(uartdivaddr); uart_config.uartdiv.value = __cpu_to_le32(1); uart_config.mcr.address = __cpu_to_le32(uartmcraddr); @@ -969,9 +974,9 @@ static int nxp_recv_fw_req_v1(struct hci_dev *hdev, struct sk_buff *skb) if (nxp_fw_change_baudrate(hdev, len)) { nxpdev->baudrate_changed = changed; serdev_device_set_baudrate(nxpdev->serdev, - HCI_NXP_SEC_BAUDRATE); + HCI_NXP_SEC_BAUDRATE_3M); serdev_device_set_flow_control(nxpdev->serdev, true); - nxpdev->current_baudrate = HCI_NXP_SEC_BAUDRATE; + nxpdev->current_baudrate = HCI_NXP_SEC_BAUDRATE_3M; } goto free_skb; } @@ -992,7 +997,7 @@ static int nxp_recv_fw_req_v1(struct hci_dev *hdev, struct sk_buff *skb) nxpdev->helper_downloaded = true; serdev_device_wait_until_sent(nxpdev->serdev, 0); serdev_device_set_baudrate(nxpdev->serdev, - HCI_NXP_SEC_BAUDRATE); + HCI_NXP_SEC_BAUDRATE_3M); serdev_device_set_flow_control(nxpdev->serdev, true); } else { clear_bit(BTNXPUART_FW_DOWNLOADING, &nxpdev->tx_state); @@ -1216,12 +1221,13 @@ static int nxp_recv_fw_req_v3(struct hci_dev *hdev, struct sk_buff *skb) } if (nxpdev->baudrate_changed != changed) { + nxpdev->new_baudrate = nxpdev->secondary_baudrate; if (nxp_fw_change_baudrate(hdev, len)) { nxpdev->baudrate_changed = cmd_sent; serdev_device_set_baudrate(nxpdev->serdev, - HCI_NXP_SEC_BAUDRATE); + nxpdev->secondary_baudrate); serdev_device_set_flow_control(nxpdev->serdev, true); - nxpdev->current_baudrate = HCI_NXP_SEC_BAUDRATE; + nxpdev->current_baudrate = nxpdev->secondary_baudrate; } goto free_skb; } @@ -1447,8 +1453,8 @@ static int nxp_post_init(struct hci_dev *hdev) struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); struct ps_data *psdata = &nxpdev->psdata; - if (nxpdev->current_baudrate != HCI_NXP_SEC_BAUDRATE) { - nxpdev->new_baudrate = HCI_NXP_SEC_BAUDRATE; + if (nxpdev->current_baudrate != nxpdev->secondary_baudrate) { + nxpdev->new_baudrate = nxpdev->secondary_baudrate; nxp_set_baudrate_cmd(hdev, NULL); } if (psdata->cur_h2c_wakeupmode != psdata->h2c_wakeupmode) @@ -1773,6 +1779,11 @@ static int nxp_serdev_probe(struct serdev_device *serdev) if (!nxpdev->fw_init_baudrate) nxpdev->fw_init_baudrate = FW_INIT_BAUDRATE; + device_property_read_u32(&nxpdev->serdev->dev, "secondary-baudrate", + &nxpdev->secondary_baudrate); + if (!nxpdev->secondary_baudrate) + nxpdev->secondary_baudrate = HCI_NXP_SEC_BAUDRATE_3M; + set_bit(BTNXPUART_FW_DOWNLOADING, &nxpdev->tx_state); crc8_populate_msb(crc8_table, POLYNOMIAL8); -- 2.34.1