[openwrt/openwrt] ath79: add HighSpeed UART (uart1) support for QCA955x

[LEDE Commits]

chunkeey pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/35ae18fc061eda057ce531e516f9623ff8d94210

commit 35ae18fc061eda057ce531e516f9623ff8d94210
Author: INAGAKI Hiroshi <musashino.open at gmail.com>
AuthorDate: Mon Mar 4 19:08:07 2024 +0900

    ath79: add HighSpeed UART (uart1) support for QCA955x
    
    Add HighSpeed UART support to QCA955x series SoCs as a secondary UART
    (uart1). This UART is compatible with qca,ar9330-uart.
    
    Signed-off-by: INAGAKI Hiroshi <musashino.open at gmail.com>
---
 target/linux/ath79/dts/qca955x.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/target/linux/ath79/dts/qca955x.dtsi b/target/linux/ath79/dts/qca955x.dtsi
index 13fbd03ccb..c12a266cda 100644
--- a/target/linux/ath79/dts/qca955x.dtsi
+++ b/target/linux/ath79/dts/qca955x.dtsi
@@ -178,6 +178,18 @@
 
 				#reset-cells = <1>;
 			};
+
+			uart1: uart at 18500000 {
+				compatible = "qca,ar9330-uart";
+				reg = <0x18500000 0x14>;
+
+				interrupts = <6>;
+
+				clocks = <&pll ATH79_CLK_REF>;
+				clock-names = "uart";
+
+				status = "disabled";
+			};
 		};
 
 		gmac: gmac at 18070000 {