Initial commit

target/linux/ath79/patches-6.6/360-MIPS-ath79-export-UART1-reference-clock.patch

@@ -0,0 +1,67 @@
+From: Daniel Golle <daniel@makrotopia.org>
+Subject: [PATCH] ath79: add support for Atheros AR934x HS UART
+
+AR934x chips also got the 'old' qca,ar9330-uart in addition to the
+'new' ns16550a compatible one. Add support for UART1 clock selector as
+well as device-tree bindings in ar934x.dtsi to make use of that uart.
+
+Reported-by: Piotr Dymacz <pepe2k@gmail.com>
+Submitted-by: Daniel Golle <daniel@makrotopia.org>
+---
+ arch/mips/ath79/clock.c                       | 7 +++++++
+ .../mips/include/asm/mach-ath79/ar71xx_regs.h | 1 +
+ include/dt-bindings/clock/ath79-clk.h         | 3 ++-
+ 3 files changed, 10 insertions(+), 1 deletion(-)
+
+--- a/arch/mips/ath79/clock.c
++++ b/arch/mips/ath79/clock.c
+@@ -40,6 +40,7 @@ static const char * const clk_names[ATH7
+ 	[ATH79_CLK_AHB] = "ahb",
+ 	[ATH79_CLK_REF] = "ref",
+ 	[ATH79_CLK_MDIO] = "mdio",
++	[ATH79_CLK_UART1] = "uart1",
+ };
+ 
+ static const char * __init ath79_clk_name(int type)
+@@ -344,6 +345,9 @@ static void __init ar934x_clocks_init(vo
+ 	if (clk_ctrl & AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL)
+ 		ath79_set_clk(ATH79_CLK_MDIO, 100 * 1000 * 1000);
+ 
++	if (clk_ctrl & AR934X_PLL_SWITCH_CLOCK_CONTROL_UART1_CLK_SEL)
++		ath79_set_clk(ATH79_CLK_UART1, 100 * 1000 * 1000);
++
+ 	iounmap(dpll_base);
+ }
+ 
+@@ -649,6 +653,9 @@ static void __init ath79_clocks_init_dt(
+ 	if (!clks[ATH79_CLK_MDIO])
+ 		clks[ATH79_CLK_MDIO] = clks[ATH79_CLK_REF];
+ 
++	if (!clks[ATH79_CLK_UART1])
++		clks[ATH79_CLK_UART1] = clks[ATH79_CLK_REF];
++
+ 	if (of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data)) {
+ 		pr_err("%pOF: could not register clk provider\n", np);
+ 		goto err_iounmap;
+--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+@@ -348,6 +348,7 @@
+ #define AR934X_PLL_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL	BIT(24)
+ 
+ #define AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL	BIT(6)
++#define AR934X_PLL_SWITCH_CLOCK_CONTROL_UART1_CLK_SEL	BIT(7)
+ 
+ #define QCA953X_PLL_CPU_CONFIG_REG		0x00
+ #define QCA953X_PLL_DDR_CONFIG_REG		0x04
+--- a/include/dt-bindings/clock/ath79-clk.h
++++ b/include/dt-bindings/clock/ath79-clk.h
+@@ -11,7 +11,8 @@
+ #define ATH79_CLK_AHB		2
+ #define ATH79_CLK_REF		3
+ #define ATH79_CLK_MDIO		4
++#define ATH79_CLK_UART1		5
+ 
+-#define ATH79_CLK_END		5
++#define ATH79_CLK_END		6
+ 
+ #endif /* __DT_BINDINGS_ATH79_CLK_H */