diff options
Diffstat (limited to 'drivers/clk/renesas')
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index d395bb8c22f5..e5247e3dc897 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/sys_soc.h> #include "renesas-cpg-mssr.h" #include "rcar-gen3-cpg.h" @@ -248,6 +249,17 @@ static struct clk * __init cpg_sd_clk_register(const struct cpg_core_clk *core, static const struct rcar_gen3_cpg_pll_config *cpg_pll_config __initdata; static unsigned int cpg_clk_extalr __initdata; static u32 cpg_mode __initdata; +static u32 cpg_quirks __initdata; + +#define PLL_ERRATA BIT(0) /* Missing PLL0/2/4 post-divider */ + +static const struct soc_device_attribute cpg_quirks_match[] __initconst = { + { + .soc_id = "r8a7795", .revision = "ES1.0", + .data = (void *)PLL_ERRATA, + }, + { /* sentinel */ } +}; struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, const struct cpg_core_clk *core, const struct cpg_mssr_info *info, @@ -276,6 +288,8 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, */ value = readl(base + CPG_PLL0CR); mult = (((value >> 24) & 0x7f) + 1) * 2; + if (cpg_quirks & PLL_ERRATA) + mult *= 2; break; case CLK_TYPE_GEN3_PLL1: @@ -291,6 +305,8 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, */ value = readl(base + CPG_PLL2CR); mult = (((value >> 24) & 0x7f) + 1) * 2; + if (cpg_quirks & PLL_ERRATA) + mult *= 2; break; case CLK_TYPE_GEN3_PLL3: @@ -306,6 +322,8 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, */ value = readl(base + CPG_PLL4CR); mult = (((value >> 24) & 0x7f) + 1) * 2; + if (cpg_quirks & PLL_ERRATA) + mult *= 2; break; case CLK_TYPE_GEN3_SD: @@ -337,8 +355,14 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, int __init rcar_gen3_cpg_init(const struct rcar_gen3_cpg_pll_config *config, unsigned int clk_extalr, u32 mode) { + const struct soc_device_attribute *attr; + cpg_pll_config = config; cpg_clk_extalr = clk_extalr; cpg_mode = mode; + attr = soc_device_match(cpg_quirks_match); + if (attr) + cpg_quirks = (uintptr_t)attr->data; + pr_debug("%s: mode = 0x%x quirks = 0x%x\n", __func__, mode, cpg_quirks); return 0; } |