From 3f1707306b79cafc5a11350befd5a4081b807760 Mon Sep 17 00:00:00 2001 From: Viken Dadhaniya Date: Thu, 11 Sep 2025 10:02:56 +0530 Subject: [PATCH] serial: qcom-geni: Load UART qup Firmware from linux side Add provision to load firmware of Serial engine for UART protocol from Linux Execution Environment on running on APPS processor. Co-developed-by: Mukesh Kumar Savaliya Signed-off-by: Mukesh Kumar Savaliya Signed-off-by: Viken Dadhaniya Link: https://lore.kernel.org/r/20250911043256.3523057-7-viken.dadhaniya@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- drivers/tty/serial/qcom_geni_serial.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 32ec632fd0807..3f5b87c4cc54c 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1200,7 +1200,13 @@ static int qcom_geni_serial_port_setup(struct uart_port *uport) int ret; proto = geni_se_read_proto(&port->se); - if (proto != GENI_SE_UART) { + if (proto == GENI_SE_INVALID_PROTO) { + ret = geni_load_se_firmware(&port->se, GENI_SE_UART); + if (ret) { + dev_err(uport->dev, "UART firmware load failed ret: %d\n", ret); + return ret; + } + } else if (proto != GENI_SE_UART) { dev_err(uport->dev, "Invalid FW loaded, proto: %d\n", proto); return -ENXIO; } -- 2.47.3