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[10/14] clk: renesas: rzg2l: Add support for RZ/V2M reset monitor reg

Message ID 20220321154232.56315-11-phil.edworthy@renesas.com (mailing list archive)
State Superseded, archived
Headers show
Series Add new Renesas RZ/V2M SoC and Renesas RZ/V2M EVK support | expand

Commit Message

Phil Edworthy March 21, 2022, 3:42 p.m. UTC 
The RZ/V2M doesn't have a matching set of reset monitor regs for each reset
reg like the RZ/G2L. Instead, it has a single CPG_RST_MON reg which has a
single bit per module.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/clk/renesas/rzg2l-cpg.c |  6 +++++-
 drivers/clk/renesas/rzg2l-cpg.h | 10 ++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index c357b0bfa119..220955366538 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -748,8 +748,12 @@  static int rzg2l_cpg_status(struct reset_controller_dev *rcdev,
 	const struct rzg2l_cpg_info *info = priv->info;
 	unsigned int reg = info->resets[id].off;
 	u32 bitmask = BIT(info->resets[id].bit);
+	u32 monbitmask = BIT(info->resets[id].monbit);
 
-	return !(readl(priv->base + CLK_MRST_R(reg)) & bitmask);
+	if (info->has_clk_mon_regs)
+		return !(readl(priv->base + CLK_MRST_R(reg)) & bitmask);
+	else
+		return !!(readl(priv->base + CPG_RST_MON) & monbitmask);
 }
 
 static const struct reset_control_ops rzg2l_cpg_reset_ops = {
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index f04671376af5..d1d08669066b 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -18,6 +18,7 @@ 
 #define CPG_PL3_SSEL		(0x408)
 #define CPG_PL6_SSEL		(0x414)
 #define CPG_PL6_ETH_SSEL	(0x418)
+#define CPG_RST_MON		(0x680)
 
 #define CPG_CLKSTATUS_SELSDHI0_STS	BIT(28)
 #define CPG_CLKSTATUS_SELSDHI1_STS	BIT(29)
@@ -151,17 +152,22 @@  struct rzg2l_mod_clk {
  *
  * @off: register offset
  * @bit: reset bit
+ * @monbit: monitor bit in CPG_RST_MON register, -1 if none
  */
 struct rzg2l_reset {
 	u16 off;
 	u8 bit;
+	s8 monbit;
 };
 
-#define DEF_RST(_id, _off, _bit)	\
+#define DEF_RST_MON(_id, _off, _bit, _monbit)	\
 	[_id] = { \
 		.off = (_off), \
-		.bit = (_bit) \
+		.bit = (_bit), \
+		.monbit = (_monbit) \
 	}
+#define DEF_RST(_id, _off, _bit)	\
+	DEF_RST_MON(_id, _off, _bit, -1)
 
 /**
  * struct rzg2l_cpg_info - SoC-specific CPG Description