(nuttx) branch master updated: xtensa/esp32s2: enable sysclk and deassert reset signal for uart1

[xiaoxiang]

This is an automated email from the ASF dual-hosted git repository.

xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new b3567fe964 xtensa/esp32s2: enable sysclk and deassert reset signal for 
uart1
b3567fe964 is described below

commit b3567fe964777951d9cf6faf94977467a871068a
Author: chenxiaoyi <chenxia...@xiaomi.com>
AuthorDate: Tue Apr 8 20:07:49 2025 +0800

    xtensa/esp32s2: enable sysclk and deassert reset signal for uart1
    
    The uart1 is found be in reset state, and the sysclk is not enabled
    for it.
    
    Signed-off-by: chenxiaoyi <chenxia...@xiaomi.com>
---
 arch/xtensa/src/esp32s2/esp32s2_lowputc.c | 1 +
 arch/xtensa/src/esp32s2/esp32s2_serial.c  | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/xtensa/src/esp32s2/esp32s2_lowputc.c 
b/arch/xtensa/src/esp32s2/esp32s2_lowputc.c
index 669f409e5e..89f88f34ed 100644
--- a/arch/xtensa/src/esp32s2/esp32s2_lowputc.c
+++ b/arch/xtensa/src/esp32s2/esp32s2_lowputc.c
@@ -817,6 +817,7 @@ void esp32s2_lowsetup(void)
 
 #ifdef CONFIG_ESP32S2_UART1
 
+  esp32s2_lowputc_rst_peripheral(&g_uart1_config);
   esp32s2_lowputc_config_pins(&g_uart1_config);
 
 #endif
diff --git a/arch/xtensa/src/esp32s2/esp32s2_serial.c 
b/arch/xtensa/src/esp32s2/esp32s2_serial.c
index a026de48ac..c1b72790f0 100644
--- a/arch/xtensa/src/esp32s2/esp32s2_serial.c
+++ b/arch/xtensa/src/esp32s2/esp32s2_serial.c
@@ -301,6 +301,8 @@ static int esp32s2_setup(struct uart_dev_s *dev)
 
   /* Initialize UART module */
 
+  esp32s2_lowputc_enable_sysclk(priv);
+
   /* Discard corrupt RX data */
 
   modifyreg32(UART_CONF0_REG(priv->id), 0, UART_ERR_WR_MASK_M);