Commit 879e9fc8 authored by Biju Das's avatar Biju Das Committed by Geert Uytterhoeven
Browse files

clk: renesas: rzv2h: Deassert reset on assert timeout 



If the assert() fails due to timeout error, set the reset register bit
back to deasserted state. This change is needed especially for handling
assert error in suspend() callback that expect the device to be in
operational state in case of failure.

Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260108123433.104464-3-biju.das.jz@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 0b0201f2

drivers/clk/renesas/rzv2h-cpg.c

+5 −4
Original line number Diff line number Diff line
@@ -1352,6 +1352,7 @@ static int __rzv2h_cpg_assert(struct reset_controller_dev *rcdev, 
	u32 mask = BIT(priv->resets[id].reset_bit);

	u8 monbit = priv->resets[id].mon_bit;

	u32 value = mask << 16;

	u32 mon;

	int ret;



	dev_dbg(rcdev->dev, "%s id:%ld offset:0x%x\n",
@@ -1364,10 +1365,10 @@ static int __rzv2h_cpg_assert(struct reset_controller_dev *rcdev, 
	reg = GET_RST_MON_OFFSET(priv->resets[id].mon_index);

	mask = BIT(monbit);



	ret = readl_poll_timeout_atomic(priv->base + reg, value,

					assert == !!(value & mask), 10, 200);

	if (ret && !assert) {

		value = mask << 16;

	ret = readl_poll_timeout_atomic(priv->base + reg, mon,

					assert == !!(mon & mask), 10, 200);

	if (ret) {

		value ^= mask;

		writel(value, priv->base + GET_RST_OFFSET(priv->resets[id].reset_index));

	}