msm: clock-pll: Update PLL enable sequences for new processes
The PLL enable sequences across certain chipsets are
different due to differing manufacturing processes.
Update the PLL enabling sequences to reflect these
differences.
Change-Id: Iba1e515b20f49d1629c512ffce2919e4ce0874c3
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
diff --git a/arch/arm/mach-msm/clock-8960.c b/arch/arm/mach-msm/clock-8960.c
index 01bc9dd..6ddb462 100644
--- a/arch/arm/mach-msm/clock-8960.c
+++ b/arch/arm/mach-msm/clock-8960.c
@@ -6430,16 +6430,16 @@
is_pll_enabled = readl_relaxed(BB_PLL14_STATUS_REG) & BIT(16);
if (!is_pll_enabled)
/* Ref clk = 27MHz and program pll14 to 480MHz */
- configure_pll(&pll14_config, &pll14_regs, 1);
+ configure_sr_pll(&pll14_config, &pll14_regs, 1);
/* Program PLL15 to 975MHz with ref clk = 27MHz */
- configure_pll(&pll15_config, &pll15_regs, 0);
+ configure_sr_pll(&pll15_config, &pll15_regs, 0);
/* Check if PLL4 is active */
is_pll_enabled = readl_relaxed(LCC_PLL0_STATUS_REG) & BIT(16);
if (!is_pll_enabled)
/* Ref clk = 27MHz and program pll4 to 393.2160MHz */
- configure_pll(&pll4_config_393, &pll4_regs, 1);
+ configure_sr_pll(&pll4_config_393, &pll4_regs, 1);
/* Enable PLL4 source on the LPASS Primary PLL Mux */
writel_relaxed(0x1, LCC_PRI_PLL_CLK_CTL_REG);
@@ -6457,7 +6457,7 @@
pll15_config.l = 0x21 | BVAL(31, 7, 0x600);
pll15_config.m = 0x1;
pll15_config.n = 0x3;
- configure_pll(&pll15_config, &pll15_regs, 0);
+ configure_sr_pll(&pll15_config, &pll15_regs, 0);
/* Disable AUX and BIST outputs */
writel_relaxed(0, MM_PLL3_TEST_CTL_REG);
}
diff --git a/arch/arm/mach-msm/clock-8974.c b/arch/arm/mach-msm/clock-8974.c
index b054e08..62e8f0f 100644
--- a/arch/arm/mach-msm/clock-8974.c
+++ b/arch/arm/mach-msm/clock-8974.c
@@ -5594,16 +5594,16 @@
if (!(readl_relaxed(GCC_REG_BASE(GPLL0_STATUS_REG))
& gpll0_clk_src.status_mask))
- configure_pll(&gpll0_config, &gpll0_regs, 1);
+ configure_sr_hpm_lp_pll(&gpll0_config, &gpll0_regs, 1);
if (!(readl_relaxed(GCC_REG_BASE(GPLL1_STATUS_REG))
& gpll1_clk_src.status_mask))
- configure_pll(&gpll1_config, &gpll1_regs, 1);
+ configure_sr_hpm_lp_pll(&gpll1_config, &gpll1_regs, 1);
- configure_pll(&mmpll0_config, &mmpll0_regs, 1);
- configure_pll(&mmpll1_config, &mmpll1_regs, 1);
- configure_pll(&mmpll3_config, &mmpll3_regs, 0);
- configure_pll(&lpapll0_config, &lpapll0_regs, 1);
+ configure_sr_hpm_lp_pll(&mmpll0_config, &mmpll0_regs, 1);
+ configure_sr_hpm_lp_pll(&mmpll1_config, &mmpll1_regs, 1);
+ configure_sr_hpm_lp_pll(&mmpll3_config, &mmpll3_regs, 0);
+ configure_sr_hpm_lp_pll(&lpapll0_config, &lpapll0_regs, 1);
/* Enable GPLL0's aux outputs. */
regval = readl_relaxed(GCC_REG_BASE(GPLL0_USER_CTL_REG));
@@ -5769,7 +5769,7 @@
if (!virt_bases[APCS_BASE])
panic("clock-8974: Unable to ioremap APCS_GCC_CC memory!");
- clk_ops_local_pll.enable = msm8974_pll_clk_enable;
+ clk_ops_local_pll.enable = sr_hpm_lp_pll_clk_enable;
vdd_dig_reg = rpm_regulator_get(NULL, "vdd_dig");
if (IS_ERR(vdd_dig_reg))
diff --git a/arch/arm/mach-msm/clock-9615.c b/arch/arm/mach-msm/clock-9615.c
index 648a8d4..15eaa4b 100644
--- a/arch/arm/mach-msm/clock-9615.c
+++ b/arch/arm/mach-msm/clock-9615.c
@@ -1807,14 +1807,14 @@
regval |= BIT(12);
writel_relaxed(regval, BB_PLL0_TEST_CTL_REG);
- configure_pll(&pll0_config, &pll0_regs, 1);
+ configure_sr_pll(&pll0_config, &pll0_regs, 1);
}
/* Check if PLL14 is enabled in FSM mode */
is_pll_enabled = readl_relaxed(BB_PLL14_STATUS_REG) & BIT(16);
if (!is_pll_enabled)
- configure_pll(&pll14_config, &pll14_regs, 1);
+ configure_sr_pll(&pll14_config, &pll14_regs, 1);
else if (!(readl_relaxed(BB_PLL14_MODE_REG) & BIT(20)))
WARN(1, "PLL14 enabled in non-FSM mode!\n");
diff --git a/arch/arm/mach-msm/clock-pll.c b/arch/arm/mach-msm/clock-pll.c
index d5831e2..23941d7 100644
--- a/arch/arm/mach-msm/clock-pll.c
+++ b/arch/arm/mach-msm/clock-pll.c
@@ -247,7 +247,7 @@
#define PLL_LOCKED_BIT BIT(16)
-int msm8974_pll_clk_enable(struct clk *c)
+int sr_hpm_lp_pll_clk_enable(struct clk *c)
{
unsigned long flags;
struct pll_clk *pll = to_pll_clk(c);
@@ -255,23 +255,12 @@
int ret = 0;
spin_lock_irqsave(&pll_reg_lock, flags);
- mode = readl_relaxed(PLL_MODE_REG(pll));
- /* Disable PLL bypass mode. */
- mode |= PLL_BYPASSNL;
+
+ /* Disable PLL bypass mode and de-assert reset. */
+ mode = PLL_BYPASSNL | PLL_RESET_N;
writel_relaxed(mode, PLL_MODE_REG(pll));
- /*
- * H/W requires a 5us delay between disabling the bypass and
- * de-asserting the reset. Delay 10us just to be safe.
- */
- mb();
- udelay(10);
-
- /* De-assert active-low PLL reset. */
- mode |= PLL_RESET_N;
- writel_relaxed(mode, PLL_MODE_REG(pll));
-
- /* Wait for pll to enable. */
+ /* Wait for pll to lock. */
for (count = ENABLE_WAIT_MAX_LOOPS; count > 0; count--) {
if (readl_relaxed(PLL_STATUS_REG(pll)) & PLL_LOCKED_BIT)
break;
@@ -453,7 +442,8 @@
.is_enabled = pll_clk_is_enabled,
};
-static void __init __set_fsm_mode(void __iomem *mode_reg)
+static void __init __set_fsm_mode(void __iomem *mode_reg,
+ u32 bias_count, u32 lock_count)
{
u32 regval = readl_relaxed(mode_reg);
@@ -463,12 +453,12 @@
/* Program bias count */
regval &= ~BM(19, 14);
- regval |= BVAL(19, 14, 0x1);
+ regval |= BVAL(19, 14, bias_count);
writel_relaxed(regval, mode_reg);
/* Program lock count */
regval &= ~BM(13, 8);
- regval |= BVAL(13, 8, 0x8);
+ regval |= BVAL(13, 8, lock_count);
writel_relaxed(regval, mode_reg);
/* Enable PLL FSM voting */
@@ -476,7 +466,7 @@
writel_relaxed(regval, mode_reg);
}
-void __init configure_pll(struct pll_config *config,
+void __init __configure_pll(struct pll_config *config,
struct pll_config_regs *regs, u32 ena_fsm_mode)
{
u32 regval;
@@ -509,8 +499,21 @@
regval &= ~config->vco_mask;
regval |= config->vco_val;
writel_relaxed(regval, PLL_CONFIG_REG(regs));
-
- /* Configure in FSM mode if necessary */
- if (ena_fsm_mode)
- __set_fsm_mode(PLL_MODE_REG(regs));
}
+
+void __init configure_sr_pll(struct pll_config *config,
+ struct pll_config_regs *regs, u32 ena_fsm_mode)
+{
+ __configure_pll(config, regs, ena_fsm_mode);
+ if (ena_fsm_mode)
+ __set_fsm_mode(PLL_MODE_REG(regs), 0x1, 0x8);
+}
+
+void __init configure_sr_hpm_lp_pll(struct pll_config *config,
+ struct pll_config_regs *regs, u32 ena_fsm_mode)
+{
+ __configure_pll(config, regs, ena_fsm_mode);
+ if (ena_fsm_mode)
+ __set_fsm_mode(PLL_MODE_REG(regs), 0x1, 0x0);
+}
+
diff --git a/arch/arm/mach-msm/clock-pll.h b/arch/arm/mach-msm/clock-pll.h
index 90f8a95..30f595b 100644
--- a/arch/arm/mach-msm/clock-pll.h
+++ b/arch/arm/mach-msm/clock-pll.h
@@ -111,7 +111,7 @@
}
int sr_pll_clk_enable(struct clk *c);
-int msm8974_pll_clk_enable(struct clk *c);
+int sr_hpm_lp_pll_clk_enable(struct clk *c);
/*
* PLL vote clock APIs
@@ -146,6 +146,8 @@
void *const __iomem *base;
};
-void __init configure_pll(struct pll_config *, struct pll_config_regs *, u32);
-
+void configure_sr_pll(struct pll_config *config, struct pll_config_regs *regs,
+ u32 ena_fsm_mode);
+void configure_sr_hpm_lp_pll(struct pll_config *config,
+ struct pll_config_regs *, u32 ena_fsm_mode);
#endif