diff options
Diffstat (limited to 'drivers/clk/socfpga/clk-periph.c')
| -rw-r--r-- | drivers/clk/socfpga/clk-periph.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/clk/socfpga/clk-periph.c b/drivers/clk/socfpga/clk-periph.c index 83aeaa219d14..52c883ea7706 100644 --- a/drivers/clk/socfpga/clk-periph.c +++ b/drivers/clk/socfpga/clk-periph.c @@ -15,8 +15,7 @@ * Based from clk-highbank.c * */ -#include <linux/clk.h> -#include <linux/clkdev.h> +#include <linux/slab.h> #include <linux/clk-provider.h> #include <linux/io.h> #include <linux/of.h> @@ -36,7 +35,7 @@ static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk, } else { if (socfpgaclk->div_reg) { val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift; - val &= div_mask(socfpgaclk->width); + val &= GENMASK(socfpgaclk->width - 1, 0); parent_rate /= (val + 1); } div = ((readl(socfpgaclk->hw.reg) & 0x1ff) + 1); @@ -45,8 +44,17 @@ static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk, return parent_rate / div; } +static u8 clk_periclk_get_parent(struct clk_hw *hwclk) +{ + u32 clk_src; + + clk_src = readl(clk_mgr_base_addr + CLKMGR_DBCTRL); + return clk_src & 0x1; +} + static const struct clk_ops periclk_ops = { .recalc_rate = clk_periclk_recalc_rate, + .get_parent = clk_periclk_get_parent, }; static __init void __socfpga_periph_init(struct device_node *node, @@ -56,7 +64,7 @@ static __init void __socfpga_periph_init(struct device_node *node, struct clk *clk; struct socfpga_periph_clk *periph_clk; const char *clk_name = node->name; - const char *parent_name; + const char *parent_name[SOCFPGA_MAX_PARENTS]; struct clk_init_data init; int rc; u32 fixed_div; @@ -90,9 +98,10 @@ static __init void __socfpga_periph_init(struct device_node *node, init.name = clk_name; init.ops = ops; init.flags = 0; - parent_name = of_clk_get_parent_name(node, 0); - init.parent_names = &parent_name; - init.num_parents = 1; + + init.num_parents = of_clk_parent_fill(node, parent_name, + SOCFPGA_MAX_PARENTS); + init.parent_names = parent_name; periph_clk->hw.hw.init = &init; |