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authorWolfram Sang <wsa+renesas@sang-engineering.com>2021-11-10 20:15:50 +0100
committerGeert Uytterhoeven <geert+renesas@glider.be>2021-11-19 11:27:58 +0100
commita31cf51bf6b4bf78ccb1c9fb40ea6231cf3df433 (patch)
treeda1a89c9140b848144267d16ff88524f6d7db4f3 /drivers/clk/renesas
parent161450134ae9bab3778c5f5732941162626d0eaa (diff)
downloadlinux-next-a31cf51bf6b4bf78ccb1c9fb40ea6231cf3df433.tar.gz
clk: renesas: rcar-gen3: Add dummy SDnH clock
Currently, SDnH is handled together with SDn. This caused lots of problems, so we want SDnH as a separate clock. Introduce a dummy SDnH type here which creates a fixed-factor clock with factor 1. That allows us to convert the per-SoC CPG drivers while keeping the old behaviour for now. A later patch then will add the proper functionality. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20211110191610.5664-2-wsa+renesas@sang-engineering.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/clk/renesas')
-rw-r--r--drivers/clk/renesas/rcar-cpg-lib.c9
-rw-r--r--drivers/clk/renesas/rcar-cpg-lib.h4
-rw-r--r--drivers/clk/renesas/rcar-gen3-cpg.c4
-rw-r--r--drivers/clk/renesas/rcar-gen3-cpg.h4
4 files changed, 21 insertions, 0 deletions
diff --git a/drivers/clk/renesas/rcar-cpg-lib.c b/drivers/clk/renesas/rcar-cpg-lib.c
index e93f0011eb07..de8d21e4c6c5 100644
--- a/drivers/clk/renesas/rcar-cpg-lib.c
+++ b/drivers/clk/renesas/rcar-cpg-lib.c
@@ -65,6 +65,15 @@ void cpg_simple_notifier_register(struct raw_notifier_head *notifiers,
/*
* SDn Clock
*/
+
+struct clk * __init cpg_sdh_clk_register(const char *name,
+ void __iomem *sdnckcr, const char *parent_name,
+ struct raw_notifier_head *notifiers)
+{
+ /* placeholder during transition */
+ return clk_register_fixed_factor(NULL, name, parent_name, 0, 1, 1);
+}
+
#define CPG_SD_STP_HCK BIT(9)
#define CPG_SD_STP_CK BIT(8)
diff --git a/drivers/clk/renesas/rcar-cpg-lib.h b/drivers/clk/renesas/rcar-cpg-lib.h
index 35c0217c2f8b..d001722ec13f 100644
--- a/drivers/clk/renesas/rcar-cpg-lib.h
+++ b/drivers/clk/renesas/rcar-cpg-lib.h
@@ -26,6 +26,10 @@ void cpg_simple_notifier_register(struct raw_notifier_head *notifiers,
void cpg_reg_modify(void __iomem *reg, u32 clear, u32 set);
+struct clk * __init cpg_sdh_clk_register(const char *name,
+ void __iomem *sdnckcr, const char *parent_name,
+ struct raw_notifier_head *notifiers);
+
struct clk * __init cpg_sd_clk_register(const char *name,
void __iomem *base, unsigned int offset, const char *parent_name,
struct raw_notifier_head *notifiers, bool skip_first);
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
index 741f6e74bbcf..0c815684dd47 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.c
+++ b/drivers/clk/renesas/rcar-gen3-cpg.c
@@ -401,6 +401,10 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev,
mult *= 2;
break;
+ case CLK_TYPE_GEN3_SDH:
+ return cpg_sdh_clk_register(core->name, base + core->offset,
+ __clk_get_name(parent), notifiers);
+
case CLK_TYPE_GEN3_SD:
return cpg_sd_clk_register(core->name, base, core->offset,
__clk_get_name(parent), notifiers,
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h
index 3d949c4a3244..2bc0afadf604 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.h
+++ b/drivers/clk/renesas/rcar-gen3-cpg.h
@@ -17,6 +17,7 @@ enum rcar_gen3_clk_types {
CLK_TYPE_GEN3_PLL2,
CLK_TYPE_GEN3_PLL3,
CLK_TYPE_GEN3_PLL4,
+ CLK_TYPE_GEN3_SDH,
CLK_TYPE_GEN3_SD,
CLK_TYPE_GEN3_R,
CLK_TYPE_GEN3_MDSEL, /* Select parent/divider using mode pin */
@@ -32,6 +33,9 @@ enum rcar_gen3_clk_types {
CLK_TYPE_GEN3_SOC_BASE,
};
+#define DEF_GEN3_SDH(_name, _id, _parent, _offset) \
+ DEF_BASE(_name, _id, CLK_TYPE_GEN3_SDH, _parent, .offset = _offset)
+
#define DEF_GEN3_SD(_name, _id, _parent, _offset) \
DEF_BASE(_name, _id, CLK_TYPE_GEN3_SD, _parent, .offset = _offset)