A clock used for the 3D graphics appears to be common
among multiple SoC's, so add a generic gen3 clock
for clocking the graphics.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
index b3ef62fa612e..7abfbf77a497 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.c
+++ b/drivers/clk/renesas/rcar-gen3-cpg.c
@@ -301,6 +301,39 @@ static struct clk * __init cpg_z_clk_register(const char *name,
return clk;
}
+static struct clk * __init cpg_zg_clk_register(const char *name,
+ const char *parent_name,
+ void __iomem *reg,
+ unsigned int div,
+ unsigned int offset)
+{
+ struct clk_init_data init;
+ struct cpg_z_clk *zclk;
+ struct clk *clk;
+
+ zclk = kzalloc(sizeof(*zclk), GFP_KERNEL);
+ if (!zclk)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &cpg_z_clk_ops;
+ init.flags = 0;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ zclk->reg = reg + CPG_FRQCRB;
+ zclk->kick_reg = reg + CPG_FRQCRB;
+ zclk->hw.init = &init;
+ zclk->mask = GENMASK(offset + 4, offset);
+ zclk->fixed_div = div; /* PLLVCO x 1/div1 x 3DGE divider x 1/div2 */
+
+ clk = clk_register(NULL, &zclk->hw);
+ if (IS_ERR(clk))
+ kfree(zclk);
+
+ return clk;
+}
+
static const struct clk_div_table cpg_rpcsrc_div_table[] = {
{ 2, 5 }, { 3, 6 }, { 0, 0 },
};
@@ -502,6 +535,9 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev,
case CLK_TYPE_GEN3_RPCD2:
return cpg_rpcd2_clk_register(core->name, base + CPG_RPCCKCR,
__clk_get_name(parent));
+ case CLK_TYPE_GEN3_ZG:
+ return cpg_zg_clk_register(core->name, __clk_get_name(parent),
+ base, core->div, core->offset);
default:
return ERR_PTR(-EINVAL);
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h
index 9028bf4295ce..bfdc649bdf12 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.h
+++ b/drivers/clk/renesas/rcar-gen3-cpg.h
@@ -22,6 +22,7 @@ enum rcar_gen3_clk_types {
CLK_TYPE_GEN3_R,
CLK_TYPE_GEN3_MDSEL, /* Select parent/divider using mode pin */
CLK_TYPE_GEN3_Z,
+ CLK_TYPE_GEN3_ZG,
CLK_TYPE_GEN3_OSC, /* OSC EXTAL predivider and fixed divider */
CLK_TYPE_GEN3_RCKSEL, /* Select parent/divider using RCKCR.CKSEL */
CLK_TYPE_GEN3_RPCSRC,
--
2.39.2
