Messages in this thread | | | Date | Mon, 4 Apr 2016 10:24:42 +0200 | From | Lars Persson <> | Subject | Re: [PATCH v5 2/2] clk: add artpec-6 clock controller |
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On 04/02/2016 03:39 AM, Stephen Boyd wrote: > On 03/31, Lars Persson wrote: >> diff --git a/drivers/clk/axis/Makefile b/drivers/clk/axis/Makefile >> new file mode 100644 >> index 0000000..628c9d3 >> --- /dev/null >> +++ b/drivers/clk/axis/Makefile >> @@ -0,0 +1 @@ >> +obj-$(CONFIG_MACH_ARTPEC6) += clk-artpec6.o >> diff --git a/drivers/clk/axis/clk-artpec6.c b/drivers/clk/axis/clk-artpec6.c >> new file mode 100644 >> index 0000000..cf716f1 >> --- /dev/null
[snip] > >> + >> + /* Read PLL1 factors configured by boot strap pins. */ >> + pll_mode = (readl(clkdata->syscon_base) >> 6) & 3; >> + switch (pll_mode) { >> + case 0: /* DDR3-2133 mode */ >> + pll_m = 4; >> + pll_n = 85; >> + break; >> + case 1: /* DDR3-1866 mode */ >> + pll_m = 6; >> + pll_n = 112; >> + break; >> + case 2: /* DDR3-1600 mode */ >> + pll_m = 4; >> + pll_n = 64; >> + break; >> + case 3: /* DDR3-1333 mode */ >> + pll_m = 8; >> + pll_n = 106; >> + break; >> + } >> + >> + clkdata->clk_table[ARTPEC6_CLK_CPU] = >> + clk_register_fixed_factor(NULL, "cpu", sys_refclk_name, 0, pll_n, >> + pll_m); >> + clkdata->clk_table[ARTPEC6_CLK_CPU_PERIPH] = >> + clk_register_fixed_factor(NULL, "cpu_periph", "cpu", 0, 1, 2); >> + >> + /* EPROBE_DEFER on the apb_clock is not handled in amba devices. */ > > Shouldn't we fix that then?
Marek Szyprowski recently tried to fix this, but Russel NAKed the change due to userspace breakage: https://lkml.org/lkml/2016/2/15/555
> >> + clkdata->clk_table[ARTPEC6_CLK_UART_PCLK] = >> + clk_register_fixed_factor(NULL, "uart_pclk", "cpu", 0, 1, 8); >> + clkdata->clk_table[ARTPEC6_CLK_UART_REFCLK] = >> + clk_register_fixed_rate(NULL, "uart_ref", sys_refclk_name, 0, >> + 50000000); >
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