From: Elaine Zhang <zhangq...@rock-chips.com>
Signed-off-by: Elaine Zhang <zhangq...@rock-chips.com>
---
arch/arm/include/asm/arch-rockchip/clock.h | 15 ++
drivers/clk/rockchip/clk_pll.c | 231 ++++++++++++++++++++-
2 files changed, 243 insertions(+), 3 deletions(-)
diff --git a/arch/arm/include/asm/arch-rockchip/clock.h
b/arch/arm/include/asm/arch-rockchip/clock.h
index 52eaf6f5e4..6b09fa0057 100644
--- a/arch/arm/include/asm/arch-rockchip/clock.h
+++ b/arch/arm/include/asm/arch-rockchip/clock.h
@@ -68,6 +68,15 @@ enum rk_clk_id {
.frac = _frac, \
}
+#define RK3588_PLL_RATE(_rate, _p, _m, _s, _k) \
+{ \
+ .rate = _rate##U, \
+ .p = _p, \
+ .m = _m, \
+ .s = _s, \
+ .k = _k, \
+}
+
struct rockchip_pll_rate_table {
unsigned long rate;
unsigned int nr;
@@ -81,6 +90,11 @@ struct rockchip_pll_rate_table {
unsigned int postdiv2;
unsigned int dsmpd;
unsigned int frac;
+ /* for RK3588 */
+ unsigned int m;
+ unsigned int p;
+ unsigned int s;
+ unsigned int k;
};
enum rockchip_pll_type {
@@ -89,6 +103,7 @@ enum rockchip_pll_type {
pll_rk3328,
pll_rk3366,
pll_rk3399,
+ pll_rk3588,
};
struct rockchip_pll_clock {
diff --git a/drivers/clk/rockchip/clk_pll.c b/drivers/clk/rockchip/clk_pll.c
index 09b97cf57a..ac37dd494c 100644
--- a/drivers/clk/rockchip/clk_pll.c
+++ b/drivers/clk/rockchip/clk_pll.c
@@ -41,6 +41,10 @@ enum {
VCO_MIN_HZ = 800 * 1000000,
OUTPUT_MAX_HZ = 3200U * 1000000,
OUTPUT_MIN_HZ = 24 * 1000000,
+ RK3588_VCO_MIN_HZ = 2250U * 1000000,
+ RK3588_VCO_MAX_HZ = 4500U * 1000000,
+ RK3588_FOUT_MIN_HZ = 37U * 1000000,
+ RK3588_FOUT_MAX_HZ = 4500U * 1000000,
};
#define MIN_FOUTVCO_FREQ (800 * MHZ)
@@ -164,6 +168,66 @@ rockchip_pll_clk_set_by_auto(ulong fin_hz,
return rate_table;
}
+static struct rockchip_pll_rate_table *
+rk3588_pll_clk_set_by_auto(unsigned long fin_hz,
+ unsigned long fout_hz)
+{
+ struct rockchip_pll_rate_table *rate_table = &rockchip_auto_table;
+ u32 p, m, s;
+ ulong fvco, fref, fout, ffrac;
+
+ if (fin_hz == 0 || fout_hz == 0 || fout_hz == fin_hz)
+ return NULL;
+
+ if (fout_hz > RK3588_FOUT_MAX_HZ || fout_hz < RK3588_FOUT_MIN_HZ)
+ return NULL;
+
+ if (fin_hz / MHZ * MHZ == fin_hz && fout_hz / MHZ * MHZ == fout_hz) {
+ for (s = 0; s <= 6; s++) {
+ fvco = fout_hz << s;
+ if (fvco < RK3588_VCO_MIN_HZ ||
+ fvco > RK3588_VCO_MAX_HZ)
+ continue;
+ for (p = 2; p <= 4; p++) {
+ for (m = 64; m <= 1023; m++) {
+ if (fvco == m * fin_hz / p) {
+ rate_table->p = p;
+ rate_table->m = m;
+ rate_table->s = s;
+ rate_table->k = 0;
+ return rate_table;
+ }
+ }
+ }
+ }
+ pr_err("CANNOT FIND Fout by auto,fout = %lu\n", fout_hz);
+ } else {
+ fout = (fout_hz / MHZ) * MHZ;
+ ffrac = (fout_hz % MHZ);
+ for (s = 0; s <= 6; s++) {
+ fvco = fout << s;
+ if (fvco < RK3588_VCO_MIN_HZ ||
+ fvco > RK3588_VCO_MAX_HZ)
+ continue;
+ for (p = 1; p <= 4; p++) {
+ for (m = 64; m <= 1023; m++) {
+ if (fvco == m * fin_hz / p) {
+ rate_table->p = p;
+ rate_table->m = m;
+ rate_table->s = s;
+ fref = fin_hz / p;
+ fout = (ffrac << s) * 65535;
+ rate_table->k = fout / fref;
+ return rate_table;
+ }
+ }
+ }
+ }
+ pr_err("CANNOT FIND Fout by auto,fout = %lu\n", fout_hz);
+ }
+ return NULL;
+}
+
static const struct rockchip_pll_rate_table *
rockchip_get_pll_settings(struct rockchip_pll_clock *pll, ulong rate)
{
@@ -174,10 +238,14 @@ rockchip_get_pll_settings(struct rockchip_pll_clock *pll,
ulong rate)
break;
rate_table++;
}
- if (rate_table->rate != rate)
- return rockchip_pll_clk_set_by_auto(24 * MHZ, rate);
- else
+ if (rate_table->rate != rate) {
+ if (pll->type == pll_rk3588)
+ return rk3588_pll_clk_set_by_auto(24 * MHZ, rate);
+ else
+ return rockchip_pll_clk_set_by_auto(24 * MHZ, rate);
+ } else {
return rate_table;
+ }
}
static int rk3036_pll_set_rate(struct rockchip_pll_clock *pll,
@@ -296,6 +364,155 @@ static ulong rk3036_pll_get_rate(struct
rockchip_pll_clock *pll,
}
}
+#define RK3588_PLLCON(i) ((i) * 0x4)
+#define RK3588_PLLCON0_M_MASK 0x3ff << 0
+#define RK3588_PLLCON0_M_SHIFT 0
+#define RK3588_PLLCON1_P_MASK 0x3f << 0
+#define RK3588_PLLCON1_P_SHIFT 0
+#define RK3588_PLLCON1_S_MASK 0x7 << 6
+#define RK3588_PLLCON1_S_SHIFT 6
+#define RK3588_PLLCON2_K_MASK 0xffff
+#define RK3588_PLLCON2_K_SHIFT 0
+#define RK3588_PLLCON1_PWRDOWN BIT(13)
+#define RK3588_PLLCON6_LOCK_STATUS BIT(15)
+#define RK3588_B0PLL_CLKSEL_CON(i) ((i) * 0x4 + 0x50000 + 0x300)
+#define RK3588_B1PLL_CLKSEL_CON(i) ((i) * 0x4 + 0x52000 + 0x300)
+#define RK3588_LPLL_CLKSEL_CON(i) ((i) * 0x4 + 0x58000 + 0x300)
+
+static int rk3588_pll_set_rate(struct rockchip_pll_clock *pll,
+ void __iomem *base, ulong pll_id,
+ ulong drate)
+{
+ const struct rockchip_pll_rate_table *rate;
+
+ rate = rockchip_get_pll_settings(pll, drate);
+ if (!rate) {
+ printf("%s unsupported rate\n", __func__);
+ return -EINVAL;
+ }
+
+ debug("%s: rate settings for %lu p: %d, m: %d, s: %d, k: %d\n",
+ __func__, rate->rate, rate->p, rate->m, rate->s, rate->k);
+
+ /*
+ * When power on or changing PLL setting,
+ * we must force PLL into slow mode to ensure output stable clock.
+ */
+ rk_clrsetreg(base + pll->mode_offset,
+ pll->mode_mask << pll->mode_shift,
+ RKCLK_PLL_MODE_SLOW << pll->mode_shift);
+ if (pll_id == 0)
+ rk_clrsetreg(base + RK3588_B0PLL_CLKSEL_CON(0),
+ pll->mode_mask << 6,
+ RKCLK_PLL_MODE_SLOW << 6);
+ else if (pll_id == 1)
+ rk_clrsetreg(base + RK3588_B1PLL_CLKSEL_CON(0),
+ pll->mode_mask << 6,
+ RKCLK_PLL_MODE_SLOW << 6);
+ else if (pll_id == 2)
+ rk_clrsetreg(base + RK3588_LPLL_CLKSEL_CON(5),
+ pll->mode_mask << 14,
+ RKCLK_PLL_MODE_SLOW << 14);
+
+ /* Power down */
+ rk_setreg(base + pll->con_offset + RK3588_PLLCON(1),
+ RK3588_PLLCON1_PWRDOWN);
+
+ rk_clrsetreg(base + pll->con_offset,
+ RK3588_PLLCON0_M_MASK,
+ (rate->m << RK3588_PLLCON0_M_SHIFT));
+ rk_clrsetreg(base + pll->con_offset + RK3588_PLLCON(1),
+ (RK3588_PLLCON1_P_MASK |
+ RK3588_PLLCON1_S_MASK),
+ (rate->p << RK3588_PLLCON1_P_SHIFT |
+ rate->s << RK3588_PLLCON1_S_SHIFT));
+ if (!rate->k) {
+ rk_clrsetreg(base + pll->con_offset + RK3588_PLLCON(2),
+ RK3588_PLLCON2_K_MASK,
+ rate->k << RK3588_PLLCON2_K_SHIFT);
+ }
+ /* Power up */
+ rk_clrreg(base + pll->con_offset + RK3588_PLLCON(1),
+ RK3588_PLLCON1_PWRDOWN);
+
+ /* waiting for pll lock */
+ while (!(readl(base + pll->con_offset + RK3588_PLLCON(6)) &
+ RK3588_PLLCON6_LOCK_STATUS)) {
+ udelay(1);
+ debug("%s: wait pll lock, pll_id=%ld\n", __func__, pll_id);
+ }
+
+ rk_clrsetreg(base + pll->mode_offset, pll->mode_mask << pll->mode_shift,
+ RKCLK_PLL_MODE_NORMAL << pll->mode_shift);
+ if (pll_id == 0)
+ rk_clrsetreg(base + RK3588_B0PLL_CLKSEL_CON(0),
+ pll->mode_mask << 6,
+ 2 << 6);
+ else if (pll_id == 1)
+ rk_clrsetreg(base + RK3588_B0PLL_CLKSEL_CON(0),
+ pll->mode_mask << 6,
+ 2 << 6);
+ else if (pll_id == 2)
+ rk_clrsetreg(base + RK3588_LPLL_CLKSEL_CON(5),
+ pll->mode_mask << 14,
+ 2 << 14);
+ debug("PLL at %p: con0=%x con1= %x con2= %x mode= %x\n",
+ pll, readl(base + pll->con_offset),
+ readl(base + pll->con_offset + 0x4),
+ readl(base + pll->con_offset + 0x8),
+ readl(base + pll->mode_offset));
+
+ return 0;
+}
+
+static ulong rk3588_pll_get_rate(struct rockchip_pll_clock *pll,
+ void __iomem *base, ulong pll_id)
+{
+ u32 m, p, s, k;
+ u32 con = 0, shift, mode;
+ u64 rate, postdiv;
+
+ con = readl(base + pll->mode_offset);
+ shift = pll->mode_shift;
+ if (pll_id == 8)
+ mode = RKCLK_PLL_MODE_NORMAL;
+ else
+ mode = (con & (pll->mode_mask << shift)) >> shift;
+ switch (mode) {
+ case RKCLK_PLL_MODE_SLOW:
+ return OSC_HZ;
+ case RKCLK_PLL_MODE_NORMAL:
+ /* normal mode */
+ con = readl(base + pll->con_offset);
+ m = (con & RK3588_PLLCON0_M_MASK) >>
+ RK3588_PLLCON0_M_SHIFT;
+ con = readl(base + pll->con_offset + RK3588_PLLCON(1));
+ p = (con & RK3588_PLLCON1_P_MASK) >>
+ RK3036_PLLCON0_FBDIV_SHIFT;
+ s = (con & RK3588_PLLCON1_S_MASK) >>
+ RK3588_PLLCON1_S_SHIFT;
+ con = readl(base + pll->con_offset + RK3588_PLLCON(2));
+ k = (con & RK3588_PLLCON2_K_MASK) >>
+ RK3588_PLLCON2_K_SHIFT;
+
+ rate = OSC_HZ / p;
+ rate *= m;
+ if (k) {
+ /* fractional mode */
+ u64 frac_rate64 = OSC_HZ * k;
+
+ postdiv = p * 65535;
+ do_div(frac_rate64, postdiv);
+ rate += frac_rate64;
+ }
+ rate = rate >> s;
+ return rate;
+ case RKCLK_PLL_MODE_DEEP:
+ default:
+ return 32768;
+ }
+}
+
ulong rockchip_pll_get_rate(struct rockchip_pll_clock *pll,
void __iomem *base,
ulong pll_id)
@@ -311,6 +528,10 @@ ulong rockchip_pll_get_rate(struct rockchip_pll_clock *pll,
pll->mode_mask = PLL_RK3328_MODE_MASK;
rate = rk3036_pll_get_rate(pll, base, pll_id);
break;
+ case pll_rk3588:
+ pll->mode_mask = PLL_MODE_MASK;
+ rate = rk3588_pll_get_rate(pll, base, pll_id);
+ break;
default:
printf("%s: Unknown pll type for pll clk %ld\n",
__func__, pll_id);
@@ -336,6 +557,10 @@ int rockchip_pll_set_rate(struct rockchip_pll_clock *pll,
pll->mode_mask = PLL_RK3328_MODE_MASK;
ret = rk3036_pll_set_rate(pll, base, pll_id, drate);
break;
+ case pll_rk3588:
+ pll->mode_mask = PLL_MODE_MASK;
+ ret = rk3588_pll_set_rate(pll, base, pll_id, drate);
+ break;
default:
printf("%s: Unknown pll type for pll clk %ld\n",
__func__, pll_id);
--
2.39.1
