Commit af2d1b52 authored by Matthias Schiffer's avatar Matthias Schiffer Committed by Paul Burton

MIPS: ath79: add support for QCA953x QCA956x TP9343

This patch adds support for 2 new types of QCA silicon. TP9343 is
essentially the same as the QCA956X but is licensed by TPLink.
Signed-off-by: default avatarWeijie Gao <hackpascal@gmail.com>
Signed-off-by: default avatarMatthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: default avatarJohn Crispin <john@phrozen.org>
Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19911/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
parent a95f4b1c
......@@ -355,6 +355,91 @@ static void __init ar934x_clocks_init(void)
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;
......@@ -440,6 +525,110 @@ static void __init qca955x_clocks_init(void)
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;
/*
* QCA956x timer init workaround has to be applied right before setting
* up the clock. Else, there will be no jiffies
*/
u32 misc;
misc = ath79_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE);
misc |= MISC_INT_MIPS_SI_TIMERINT_MASK;
ath79_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE, misc);
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())
......@@ -450,8 +639,12 @@ void __init ath79_clocks_init(void)
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() || soc_is_tp9343())
qca956x_clocks_init();
else
BUG();
}
......
......@@ -103,8 +103,12 @@ void ath79_device_reset_set(u32 mask)
reg = AR933X_RESET_REG_RESET_MODULE;
else if (soc_is_ar934x())
reg = AR934X_RESET_REG_RESET_MODULE;
else if (soc_is_qca953x())
reg = QCA953X_RESET_REG_RESET_MODULE;
else if (soc_is_qca955x())
reg = QCA955X_RESET_REG_RESET_MODULE;
else if (soc_is_qca956x() || soc_is_tp9343())
reg = QCA956X_RESET_REG_RESET_MODULE;
else
BUG();
......@@ -131,8 +135,12 @@ void ath79_device_reset_clear(u32 mask)
reg = AR933X_RESET_REG_RESET_MODULE;
else if (soc_is_ar934x())
reg = AR934X_RESET_REG_RESET_MODULE;
else if (soc_is_qca953x())
reg = QCA953X_RESET_REG_RESET_MODULE;
else if (soc_is_qca955x())
reg = QCA955X_RESET_REG_RESET_MODULE;
else if (soc_is_qca956x() || soc_is_tp9343())
reg = QCA956X_RESET_REG_RESET_MODULE;
else
BUG();
......
......@@ -78,8 +78,12 @@ static void prom_putchar_init(void)
case REV_ID_MAJOR_AR9341:
case REV_ID_MAJOR_AR9342:
case REV_ID_MAJOR_AR9344:
case REV_ID_MAJOR_QCA9533:
case REV_ID_MAJOR_QCA9533_V2:
case REV_ID_MAJOR_QCA9556:
case REV_ID_MAJOR_QCA9558:
case REV_ID_MAJOR_TP9343:
case REV_ID_MAJOR_QCA956X:
_prom_putchar = prom_putchar_ar71xx;
break;
......
......@@ -59,6 +59,7 @@ static void __init ath79_detect_sys_type(void)
u32 major;
u32 minor;
u32 rev = 0;
u32 ver = 1;
id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID);
major = id & REV_ID_MAJOR_MASK;
......@@ -151,6 +152,17 @@ static void __init ath79_detect_sys_type(void)
rev = id & AR934X_REV_ID_REVISION_MASK;
break;
case REV_ID_MAJOR_QCA9533_V2:
ver = 2;
ath79_soc_rev = 2;
/* drop through */
case REV_ID_MAJOR_QCA9533:
ath79_soc = ATH79_SOC_QCA9533;
chip = "9533";
rev = id & QCA953X_REV_ID_REVISION_MASK;
break;
case REV_ID_MAJOR_QCA9556:
ath79_soc = ATH79_SOC_QCA9556;
chip = "9556";
......@@ -163,14 +175,30 @@ static void __init ath79_detect_sys_type(void)
rev = id & QCA955X_REV_ID_REVISION_MASK;
break;
case REV_ID_MAJOR_QCA956X:
ath79_soc = ATH79_SOC_QCA956X;
chip = "956X";
rev = id & QCA956X_REV_ID_REVISION_MASK;
break;
case REV_ID_MAJOR_TP9343:
ath79_soc = ATH79_SOC_TP9343;
chip = "9343";
rev = id & QCA956X_REV_ID_REVISION_MASK;
break;
default:
panic("ath79: unknown SoC, id:0x%08x", id);
}
ath79_soc_rev = rev;
if (ver == 1)
ath79_soc_rev = rev;
if (soc_is_qca955x())
sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s rev %u",
if (soc_is_qca953x() || soc_is_qca955x() || soc_is_qca956x())
sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s ver %u rev %u",
chip, ver, rev);
else if (soc_is_tp9343())
sprintf(ath79_sys_type, "Qualcomm Atheros TP%s rev %u",
chip, rev);
else
sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev);
......
......@@ -32,8 +32,11 @@ enum ath79_soc_type {
ATH79_SOC_AR9341,
ATH79_SOC_AR9342,
ATH79_SOC_AR9344,
ATH79_SOC_QCA9533,
ATH79_SOC_QCA9556,
ATH79_SOC_QCA9558,
ATH79_SOC_TP9343,
ATH79_SOC_QCA956X,
};
extern enum ath79_soc_type ath79_soc;
......@@ -100,6 +103,16 @@ static inline int soc_is_ar934x(void)
return soc_is_ar9341() || soc_is_ar9342() || soc_is_ar9344();
}
static inline int soc_is_qca9533(void)
{
return ath79_soc == ATH79_SOC_QCA9533;
}
static inline int soc_is_qca953x(void)
{
return soc_is_qca9533();
}
static inline int soc_is_qca9556(void)
{
return ath79_soc == ATH79_SOC_QCA9556;
......@@ -115,6 +128,26 @@ static inline int soc_is_qca955x(void)
return soc_is_qca9556() || soc_is_qca9558();
}
static inline int soc_is_tp9343(void)
{
return ath79_soc == ATH79_SOC_TP9343;
}
static inline int soc_is_qca9561(void)
{
return ath79_soc == ATH79_SOC_QCA956X;
}
static inline int soc_is_qca9563(void)
{
return ath79_soc == ATH79_SOC_QCA956X;
}
static inline int soc_is_qca956x(void)
{
return soc_is_qca9561() || soc_is_qca9563();
}
void ath79_ddr_wb_flush(unsigned int reg);
void ath79_ddr_set_pci_windows(void);
......
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