ath79 board support

Use full OpenWrt patch for it, as it works better on 4.1.13
kernel. Deduplicate the patches for atheros devices.

83 files changed, 47202 insertions, 47044 deletions

diff --git a/target/mips/ath79/patches/4.1.13/0001-openwrt-ath79.patch b/target/mips/ath79/patches/4.1.13/0001-openwrt-ath79.patch
new file mode 100644
index 000000000..4178f20cb
--- /dev/null
+++ b/target/mips/ath79/patches/4.1.13/0001-openwrt-ath79.patch
@@ -0,0 +1,47200 @@
+diff -Nur linux-4.1.13.orig/arch/mips/ath79/clock.c linux-4.1.13/arch/mips/ath79/clock.c
+--- linux-4.1.13.orig/arch/mips/ath79/clock.c	2015-11-09 23:34:10.000000000 +0100
++++ linux-4.1.13/arch/mips/ath79/clock.c	2015-12-04 19:57:05.422010155 +0100
+@@ -25,7 +25,7 @@
+ #include "common.h"
+ 
+ #define AR71XX_BASE_FREQ	40000000
+-#define AR724X_BASE_FREQ	5000000
++#define AR724X_BASE_FREQ	40000000
+ #define AR913X_BASE_FREQ	5000000
+ 
+ struct clk {
+@@ -99,8 +99,8 @@
+ 	div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK);
+ 	freq = div * ref_rate;
+ 
+-	div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK);
+-	freq *= div;
++	div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK) * 2;
++	freq /= div;
+ 
+ 	cpu_rate = freq;
+ 
+@@ -350,6 +350,91 @@
+ 	iounmap(dpll_base);
+ }
+ 
++static void __init qca953x_clocks_init(void)
++{
++	unsigned long ref_rate;
++	unsigned long cpu_rate;
++	unsigned long ddr_rate;
++	unsigned long ahb_rate;
++	u32 pll, out_div, ref_div, nint, frac, clk_ctrl, postdiv;
++	u32 cpu_pll, ddr_pll;
++	u32 bootstrap;
++
++	bootstrap = ath79_reset_rr(QCA953X_RESET_REG_BOOTSTRAP);
++	if (bootstrap &	QCA953X_BOOTSTRAP_REF_CLK_40)
++		ref_rate = 40 * 1000 * 1000;
++	else
++		ref_rate = 25 * 1000 * 1000;
++
++	pll = ath79_pll_rr(QCA953X_PLL_CPU_CONFIG_REG);
++	out_div = (pll >> QCA953X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
++		  QCA953X_PLL_CPU_CONFIG_OUTDIV_MASK;
++	ref_div = (pll >> QCA953X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
++		  QCA953X_PLL_CPU_CONFIG_REFDIV_MASK;
++	nint = (pll >> QCA953X_PLL_CPU_CONFIG_NINT_SHIFT) &
++	       QCA953X_PLL_CPU_CONFIG_NINT_MASK;
++	frac = (pll >> QCA953X_PLL_CPU_CONFIG_NFRAC_SHIFT) &
++	       QCA953X_PLL_CPU_CONFIG_NFRAC_MASK;
++
++	cpu_pll = nint * ref_rate / ref_div;
++	cpu_pll += frac * (ref_rate >> 6) / ref_div;
++	cpu_pll /= (1 << out_div);
++
++	pll = ath79_pll_rr(QCA953X_PLL_DDR_CONFIG_REG);
++	out_div = (pll >> QCA953X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
++		  QCA953X_PLL_DDR_CONFIG_OUTDIV_MASK;
++	ref_div = (pll >> QCA953X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
++		  QCA953X_PLL_DDR_CONFIG_REFDIV_MASK;
++	nint = (pll >> QCA953X_PLL_DDR_CONFIG_NINT_SHIFT) &
++	       QCA953X_PLL_DDR_CONFIG_NINT_MASK;
++	frac = (pll >> QCA953X_PLL_DDR_CONFIG_NFRAC_SHIFT) &
++	       QCA953X_PLL_DDR_CONFIG_NFRAC_MASK;
++
++	ddr_pll = nint * ref_rate / ref_div;
++	ddr_pll += frac * (ref_rate >> 6) / (ref_div << 4);
++	ddr_pll /= (1 << out_div);
++
++	clk_ctrl = ath79_pll_rr(QCA953X_PLL_CLK_CTRL_REG);
++
++	postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
++		  QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA953X_PLL_CLK_CTRL_CPU_PLL_BYPASS)
++		cpu_rate = ref_rate;
++	else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL)
++		cpu_rate = cpu_pll / (postdiv + 1);
++	else
++		cpu_rate = ddr_pll / (postdiv + 1);
++
++	postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) &
++		  QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA953X_PLL_CLK_CTRL_DDR_PLL_BYPASS)
++		ddr_rate = ref_rate;
++	else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL)
++		ddr_rate = ddr_pll / (postdiv + 1);
++	else
++		ddr_rate = cpu_pll / (postdiv + 1);
++
++	postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) &
++		  QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA953X_PLL_CLK_CTRL_AHB_PLL_BYPASS)
++		ahb_rate = ref_rate;
++	else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL)
++		ahb_rate = ddr_pll / (postdiv + 1);
++	else
++		ahb_rate = cpu_pll / (postdiv + 1);
++
++	ath79_add_sys_clkdev("ref", ref_rate);
++	ath79_add_sys_clkdev("cpu", cpu_rate);
++	ath79_add_sys_clkdev("ddr", ddr_rate);
++	ath79_add_sys_clkdev("ahb", ahb_rate);
++
++	clk_add_alias("wdt", NULL, "ref", NULL);
++	clk_add_alias("uart", NULL, "ref", NULL);
++}
++
+ static void __init qca955x_clocks_init(void)
+ {
+ 	unsigned long ref_rate;
+@@ -435,6 +520,100 @@
+ 	clk_add_alias("uart", NULL, "ref", NULL);
+ }
+ 
++static void __init qca956x_clocks_init(void)
++{
++	unsigned long ref_rate;
++	unsigned long cpu_rate;
++	unsigned long ddr_rate;
++	unsigned long ahb_rate;
++	u32 pll, out_div, ref_div, nint, hfrac, lfrac, clk_ctrl, postdiv;
++	u32 cpu_pll, ddr_pll;
++	u32 bootstrap;
++
++	bootstrap = ath79_reset_rr(QCA956X_RESET_REG_BOOTSTRAP);
++	if (bootstrap &	QCA956X_BOOTSTRAP_REF_CLK_40)
++		ref_rate = 40 * 1000 * 1000;
++	else
++		ref_rate = 25 * 1000 * 1000;
++
++	pll = ath79_pll_rr(QCA956X_PLL_CPU_CONFIG_REG);
++	out_div = (pll >> QCA956X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
++		  QCA956X_PLL_CPU_CONFIG_OUTDIV_MASK;
++	ref_div = (pll >> QCA956X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
++		  QCA956X_PLL_CPU_CONFIG_REFDIV_MASK;
++
++	pll = ath79_pll_rr(QCA956X_PLL_CPU_CONFIG1_REG);
++	nint = (pll >> QCA956X_PLL_CPU_CONFIG1_NINT_SHIFT) &
++	       QCA956X_PLL_CPU_CONFIG1_NINT_MASK;
++	hfrac = (pll >> QCA956X_PLL_CPU_CONFIG1_NFRAC_H_SHIFT) &
++	       QCA956X_PLL_CPU_CONFIG1_NFRAC_H_MASK;
++	lfrac = (pll >> QCA956X_PLL_CPU_CONFIG1_NFRAC_L_SHIFT) &
++	       QCA956X_PLL_CPU_CONFIG1_NFRAC_L_MASK;
++
++	cpu_pll = nint * ref_rate / ref_div;
++	cpu_pll += (lfrac * ref_rate) / ((ref_div * 25) << 13);
++	cpu_pll += (hfrac >> 13) * ref_rate / ref_div;
++	cpu_pll /= (1 << out_div);
++
++	pll = ath79_pll_rr(QCA956X_PLL_DDR_CONFIG_REG);
++	out_div = (pll >> QCA956X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
++		  QCA956X_PLL_DDR_CONFIG_OUTDIV_MASK;
++	ref_div = (pll >> QCA956X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
++		  QCA956X_PLL_DDR_CONFIG_REFDIV_MASK;
++	pll = ath79_pll_rr(QCA956X_PLL_DDR_CONFIG1_REG);
++	nint = (pll >> QCA956X_PLL_DDR_CONFIG1_NINT_SHIFT) &
++	       QCA956X_PLL_DDR_CONFIG1_NINT_MASK;
++	hfrac = (pll >> QCA956X_PLL_DDR_CONFIG1_NFRAC_H_SHIFT) &
++	       QCA956X_PLL_DDR_CONFIG1_NFRAC_H_MASK;
++	lfrac = (pll >> QCA956X_PLL_DDR_CONFIG1_NFRAC_L_SHIFT) &
++	       QCA956X_PLL_DDR_CONFIG1_NFRAC_L_MASK;
++
++	ddr_pll = nint * ref_rate / ref_div;
++	ddr_pll += (lfrac * ref_rate) / ((ref_div * 25) << 13);
++	ddr_pll += (hfrac >> 13) * ref_rate / ref_div;
++	ddr_pll /= (1 << out_div);
++
++	clk_ctrl = ath79_pll_rr(QCA956X_PLL_CLK_CTRL_REG);
++
++	postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
++		  QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_PLL_BYPASS)
++		cpu_rate = ref_rate;
++	else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_DDRCLK_FROM_CPUPLL)
++		cpu_rate = ddr_pll / (postdiv + 1);
++	else
++		cpu_rate = cpu_pll / (postdiv + 1);
++
++	postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) &
++		  QCA956X_PLL_CLK_CTRL_DDR_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA956X_PLL_CLK_CTRL_DDR_PLL_BYPASS)
++		ddr_rate = ref_rate;
++	else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_DDRCLK_FROM_DDRPLL)
++		ddr_rate = cpu_pll / (postdiv + 1);
++	else
++		ddr_rate = ddr_pll / (postdiv + 1);
++
++	postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) &
++		  QCA956X_PLL_CLK_CTRL_AHB_POST_DIV_MASK;
++
++	if (clk_ctrl & QCA956X_PLL_CLK_CTRL_AHB_PLL_BYPASS)
++		ahb_rate = ref_rate;
++	else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL)
++		ahb_rate = ddr_pll / (postdiv + 1);
++	else
++		ahb_rate = cpu_pll / (postdiv + 1);
++
++	ath79_add_sys_clkdev("ref", ref_rate);
++	ath79_add_sys_clkdev("cpu", cpu_rate);
++	ath79_add_sys_clkdev("ddr", ddr_rate);
++	ath79_add_sys_clkdev("ahb", ahb_rate);
++
++	clk_add_alias("wdt", NULL, "ref", NULL);
++	clk_add_alias("uart", NULL, "ref", NULL);
++}
++
+ void __init ath79_clocks_init(void)
+ {
+ 	if (soc_is_ar71xx())
+@@ -447,8 +626,12 @@
+ 		ar933x_clocks_init();
+ 	else if (soc_is_ar934x())
+ 		ar934x_clocks_init();
++	else if (soc_is_qca953x())
++		qca953x_clocks_init();
+ 	else if (soc_is_qca955x())
+ 		qca955x_clocks_init();
++	else if (soc_is_qca956x())
++		qca956x_clocks_init();
+ 	else
+ 		BUG();
+ }
+@@ -488,3 +671,15 @@
+ 	return clk->rate;
+ }
+ EXPORT_SYMBOL(clk_get_rate);
++
++int clk_set_rate(struct clk *clk, unsigned long rate)
++{
++	return 0;
++}
++EXPORT_SYMBOL_GPL(clk_set_rate);
++
++long clk_round_rate(struct clk *clk, unsigned long rate)
++{
++	return 0;
++}
++EXPORT_SYMBOL_GPL(clk_round_rate);