This function was intended for MN2WS0235 (what we call PH1-Pro4TV). On that SoC, MPLL is already running on the power-on reset and it makes sense to stop the PLL at early boot-up. On the other hand, PH1-Pro4(R) does not have SC_MPLLOSCCTL register, so this function has no point.
Signed-off-by: Masahiro Yamada yamada.m@jp.panasonic.com ---
Changes in v3: - Newly added
Changes in v2: None
arch/arm/mach-uniphier/include/mach/sc-regs.h | 4 ---- arch/arm/mach-uniphier/ph1-pro4/pll_init.c | 17 ----------------- 2 files changed, 21 deletions(-)
diff --git a/arch/arm/mach-uniphier/include/mach/sc-regs.h b/arch/arm/mach-uniphier/include/mach/sc-regs.h index 397ace8..09b9e6e 100644 --- a/arch/arm/mach-uniphier/include/mach/sc-regs.h +++ b/arch/arm/mach-uniphier/include/mach/sc-regs.h @@ -11,10 +11,6 @@
#define SC_BASE_ADDR 0x61840000
-#define SC_MPLLOSCCTL (SC_BASE_ADDR | 0x1184) -#define SC_MPLLOSCCTL_MPLLEN (0x1 << 0) -#define SC_MPLLOSCCTL_MPLLST (0x1 << 1) - #define SC_DPLLCTRL (SC_BASE_ADDR | 0x1200) #define SC_DPLLCTRL_SSC_EN (0x1 << 31) #define SC_DPLLCTRL_FOUTMODE_MASK (0xf << 16) diff --git a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c b/arch/arm/mach-uniphier/ph1-pro4/pll_init.c index 3d29548..2a965a5 100644 --- a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c +++ b/arch/arm/mach-uniphier/ph1-pro4/pll_init.c @@ -46,22 +46,6 @@ static void dpll_init(void) writel(tmp, SC_DPLLCTRL2); }
-static void stop_mpll(void) -{ - u32 tmp; - - tmp = readl(SC_MPLLOSCCTL); - - if (!(tmp & SC_MPLLOSCCTL_MPLLST)) - return; /* already stopped */ - - tmp &= ~SC_MPLLOSCCTL_MPLLEN; - writel(tmp, SC_MPLLOSCCTL); - - while (readl(SC_MPLLOSCCTL) & SC_MPLLOSCCTL_MPLLST) - ; -} - static void vpll_init(void) { u32 tmp, clk_mode_axosel; @@ -157,7 +141,6 @@ static void vpll_init(void) void pll_init(void) { dpll_init(); - stop_mpll(); vpll_init();
/*