Which platform are you trying to use this on? Can this be initialized by core pll function core_pll_init()? I just saw most of this function is silimar to the core_pll_init().
Thanks, Yuantian > -----Original Message----- > From: Emil Medve [mailto:emilian.me...@freescale.com] > Sent: Tuesday, January 20, 2015 6:10 PM > To: linuxppc-dev@lists.ozlabs.org; Wood Scott-B07421; mturque...@linaro.org; > haoke...@gmail.com; Tang Yuantian-B29983 > Cc: Medve Emilian-EMMEDVE1 > Subject: [PATCH 8/8] clk: ppc-corenet: Add support for the platform PLL > > Change-Id: Iac11ed95f274485a86d2c11f32a3dc502bcd020f > Signed-off-by: Emil Medve <emilian.me...@freescale.com> > --- > drivers/clk/clk-ppc-corenet.c | 85 > +++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 85 insertions(+) > > diff --git a/drivers/clk/clk-ppc-corenet.c b/drivers/clk/clk-ppc-corenet.c > index > 91816b1..ff425e1 100644 > --- a/drivers/clk/clk-ppc-corenet.c > +++ b/drivers/clk/clk-ppc-corenet.c > @@ -7,6 +7,9 @@ > * > * clock driver for Freescale PowerPC corenet SoCs. > */ > + > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt > + > #include <linux/clk-provider.h> > #include <linux/io.h> > #include <linux/kernel.h> > @@ -261,9 +264,91 @@ static void __init sysclk_init(struct device_node *node) > of_clk_add_provider(np, of_clk_src_simple_get, clk); } > > +static void __init pltfrm_pll_init(struct device_node *np) { > + void __iomem *base; > + uint32_t mult; > + const char *parent_name, *clk_name; > + int i, _errno; > + struct clk_onecell_data *cod; > + > + base = of_iomap(np, 0); > + if (!base) { > + pr_err("%s(): %s: of_iomap() failed\n", __func__, np->name); > + return; > + } > + > + /* Get the multiple of PLL */ > + mult = ioread32be(base); > + > + iounmap(base); > + > + /* Check if this PLL is disabled */ > + if (mult & PLL_KILL) { > + pr_debug("%s(): %s: Disabled\n", __func__, np->name); > + return; > + } > + mult = (mult & GENMASK(6, 1)) >> 1; > + > + parent_name = of_clk_get_parent_name(np, 0); > + if (!parent_name) { > + pr_err("%s(): %s: of_clk_get_parent_name() failed\n", > + __func__, np->name); > + return; > + } > + > + i = of_property_count_strings(np, "clock-output-names"); > + if (i < 0) { > + pr_err("%s(): %s: of_property_count_strings(clock-output-names) > = %d\n", > + __func__, np->name, i); > + return; > + } > + > + cod = kmalloc(sizeof(*cod) + i * sizeof(struct clk *), GFP_KERNEL); > + if (!cod) > + return; > + cod->clks = (struct clk **)(cod + 1); > + cod->clk_num = i; > + > + for (i = 0; i < cod->clk_num; i++) { > + _errno = of_property_read_string_index(np, "clock-output-names", > + i, &clk_name); > + if (_errno < 0) { > + pr_err("%s(): %s: > of_property_read_string_index(clock-output-names) = %d\n", > + __func__, np->name, _errno); > + goto return_clk_unregister; > + } > + > + cod->clks[i] = clk_register_fixed_factor(NULL, clk_name, > + parent_name, 0, mult, 1 + i); > + if (IS_ERR(cod->clks[i])) { > + pr_err("%s(): %s: clk_register_fixed_factor(%s) = > %ld\n", > + __func__, np->name, > + clk_name, PTR_ERR(cod->clks[i])); > + goto return_clk_unregister; > + } > + } > + > + _errno = of_clk_add_provider(np, of_clk_src_onecell_get, cod); > + if (_errno < 0) { > + pr_err("%s(): %s: of_clk_add_provider() = %d\n", > + __func__, np->name, _errno); > + goto return_clk_unregister; > + } > + > + return; > + > +return_clk_unregister: > + while (--i >= 0) > + clk_unregister(cod->clks[i]); > + kfree(cod); > +} > + > CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init); > CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init); > CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init); > CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init); > CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init); > CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init); > +CLK_OF_DECLARE(qoriq_pltfrm_pll_1, "fsl,qoriq-platform-pll-1.0", > +pltfrm_pll_init); CLK_OF_DECLARE(qoriq_pltfrm_pll_2, > +"fsl,qoriq-platform-pll-2.0", pltfrm_pll_init); > -- > 2.2.2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
