diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/renesas/clk-rcar-gen3.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/clk/renesas/clk-rcar-gen3.c b/drivers/clk/renesas/clk-rcar-gen3.c index 4e74856..3326b61 100644 --- a/drivers/clk/renesas/clk-rcar-gen3.c +++ b/drivers/clk/renesas/clk-rcar-gen3.c @@ -752,6 +752,36 @@ static int gen3_clk_get_parent(struct clk *clk, struct clk *parent) return 0; } +static int gen3_clk_setup_sdif_div(struct clk *clk) +{ + struct gen3_clk_priv *priv = dev_get_priv(clk->dev); + const struct cpg_core_clk *core; + struct clk parent; + int ret; + + ret = gen3_clk_get_parent(clk, &parent); + if (ret) { + printf("%s[%i] parent fail, ret=%i\n", __func__, __LINE__, ret); + return ret; + } + + if (gen3_clk_is_mod(&parent)) + return 0; + + ret = gen3_clk_get_core(&parent, &core); + if (ret) + return ret; + + if (core->type != CLK_TYPE_GEN3_SD) + return 0; + + debug("%s[%i] SDIF offset=%x\n", __func__, __LINE__, core->offset); + + writel(1, priv->base + core->offset); + + return 0; +} + static int gen3_clk_endisable(struct clk *clk, bool enable) { struct gen3_clk_priv *priv = dev_get_priv(clk->dev); @@ -759,6 +789,7 @@ static int gen3_clk_endisable(struct clk *clk, bool enable) const unsigned int reg = clkid / 100; const unsigned int bit = clkid % 100; const u32 bitmask = BIT(bit); + int ret; if (!gen3_clk_is_mod(clk)) return -EINVAL; @@ -767,6 +798,9 @@ static int gen3_clk_endisable(struct clk *clk, bool enable) clkid, reg, bit, enable ? "ON" : "OFF"); if (enable) { + ret = gen3_clk_setup_sdif_div(clk); + if (ret) + return ret; clrbits_le32(priv->base + SMSTPCR(reg), bitmask); return wait_for_bit("MSTP", priv->base + MSTPSR(reg), bitmask, 0, 100, 0); |