diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-07-11 13:14:44 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-08-27 17:00:18 +0200 |
| commit | 38c79e2899a66096583f3377c64b35f30584f1b4 (patch) | |
| tree | 7c8242b3318f184e721cb57cfdc6d6e5f5c05467 /drivers/clk/renesas | |
| parent | fdb78a8c35bce065272d71ac7eb64d6d7512db99 (diff) | |
clk: renesas: rcar-gen3: Add support for OSC EXTAL predivider
Add a clock type and macro for defining clocks using the OSC EXTAL
predivider combined with a fixed divider.
On most R-Car Gen3 SoCs, the predivider value depends on mode pins, and
thus must be specified in the configuration structure.
Inspired by a patch in the BSP by Takeshi Kihara
<takeshi.kihara.df@renesas.com>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'drivers/clk/renesas')
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.c | 7 | ||||
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.h | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index 628b63b85d3f..7533a51c679b 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -563,6 +563,13 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, return cpg_z_clk_register(core->name, __clk_get_name(parent), base, CPG_FRQCRC_Z2FC_MASK); + case CLK_TYPE_GEN3_OSC: + /* + * Clock combining OSC EXTAL predivider and a fixed divider + */ + div = cpg_pll_config->osc_prediv * core->div; + break; + default: return ERR_PTR(-EINVAL); } diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h index ea4f8fc3c4c9..d7d84d9e4a1c 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.h +++ b/drivers/clk/renesas/rcar-gen3-cpg.h @@ -23,6 +23,7 @@ enum rcar_gen3_clk_types { CLK_TYPE_GEN3_PE, CLK_TYPE_GEN3_Z, CLK_TYPE_GEN3_Z2, + CLK_TYPE_GEN3_OSC, /* OSC EXTAL predivider and fixed divider */ }; #define DEF_GEN3_SD(_name, _id, _parent, _offset) \ @@ -33,6 +34,8 @@ enum rcar_gen3_clk_types { DEF_BASE(_name, _id, CLK_TYPE_GEN3_PE, \ (_parent_sscg) << 16 | (_parent_clean), \ .div = (_div_sscg) << 16 | (_div_clean)) +#define DEF_GEN3_OSC(_name, _id, _parent, _div) \ + DEF_BASE(_name, _id, CLK_TYPE_GEN3_OSC, _parent, .div = _div) struct rcar_gen3_cpg_pll_config { u8 extal_div; @@ -40,6 +43,7 @@ struct rcar_gen3_cpg_pll_config { u8 pll1_div; u8 pll3_mult; u8 pll3_div; + u8 osc_prediv; }; #define CPG_RCKCR 0x240 |