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ARM: uniphier: enable SSC for more PLLs for LD20 SoC

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For Electro-Magnetic Compatibility.

Set CPLL, SPLL2, MPLL, VPPLL, GPPLL, DPLL* to SSC rate 1 percent.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2016-10-27 23:47:00 +09:00
parent dd39ee8a54
commit 295326231d
2 changed files with 11 additions and 13 deletions
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9
arch/arm/mach-uniphier/clk/dpll-ld20.c
View File

@ -11,12 +11,9 @@
int uniphier_ld20_dpll_init(const struct uniphier_board_data *bd)
{
unsigned int dpll_ssc_rate = UNIPHIER_BD_DPLL_SSC_GET_RATE(bd->flags);
unsigned int dram_freq = bd->dram_freq;
uniphier_ld20_sscpll_init(SC_DPLL0CTRL, dram_freq, dpll_ssc_rate, 2);
uniphier_ld20_sscpll_init(SC_DPLL1CTRL, dram_freq, dpll_ssc_rate, 2);
uniphier_ld20_sscpll_init(SC_DPLL2CTRL, dram_freq, dpll_ssc_rate, 2);
uniphier_ld20_sscpll_init(SC_DPLL0CTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
uniphier_ld20_sscpll_init(SC_DPLL1CTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
uniphier_ld20_sscpll_init(SC_DPLL2CTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 2);
return 0;
}

15
arch/arm/mach-uniphier/clk/pll-ld20.c
View File

@ -13,8 +13,6 @@
int uniphier_ld20_pll_init(const struct uniphier_board_data *bd)
{
unsigned int dpll_ssc_rate = UNIPHIER_BD_DPLL_SSC_GET_RATE(bd->flags);
uniphier_ld20_sscpll_init(SC_CPLLCTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 4);
/* do nothing for SPLL */
uniphier_ld20_sscpll_init(SC_SPLL2CTRL, UNIPHIER_PLL_FREQ_DEFAULT, 0, 4);
@ -24,11 +22,14 @@ int uniphier_ld20_pll_init(const struct uniphier_board_data *bd)
mdelay(1);
if (dpll_ssc_rate > 0) {
uniphier_ld20_sscpll_ssc_en(SC_DPLL0CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL1CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL2CTRL);
}
uniphier_ld20_sscpll_ssc_en(SC_CPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_SPLL2CTRL);
uniphier_ld20_sscpll_ssc_en(SC_MPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_VPPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_GPPLLCTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL0CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL1CTRL);
uniphier_ld20_sscpll_ssc_en(SC_DPLL2CTRL);
uniphier_ld20_vpll27_init(SC_VPLL27FCTRL);
uniphier_ld20_vpll27_init(SC_VPLL27ACTRL);