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From: Tony Lindgren <tony@atomide.com>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Tero Kristo <t-kristo@ti.com>
Cc: devicetree@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-omap@vger.kernel.org
Subject: [PATCH] clk: ti: clkctrl: Fix clkdm_clk handling
Date: Mon,  6 May 2019 14:08:54 -0700	[thread overview]
Message-ID: <20190506210854.24300-1-tony@atomide.com> (raw)

We need to always call clkdm_clk_enable() and clkdm_clk_disable() even
the clkctrl clock(s) enabled for the domain do not have any gate register
bits. Otherwise clockdomains may never get enabled except when devices get
probed with the legacy "ti,hwmods" devicetree property.

Fixes: 88a172526c32 ("clk: ti: add support for clkctrl clocks")
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/clk/ti/clkctrl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c
--- a/drivers/clk/ti/clkctrl.c
+++ b/drivers/clk/ti/clkctrl.c
@@ -137,9 +137,6 @@ static int _omap4_clkctrl_clk_enable(struct clk_hw *hw)
 	int ret;
 	union omap4_timeout timeout = { 0 };
 
-	if (!clk->enable_bit)
-		return 0;
-
 	if (clk->clkdm) {
 		ret = ti_clk_ll_ops->clkdm_clk_enable(clk->clkdm, hw->clk);
 		if (ret) {
@@ -151,6 +148,9 @@ static int _omap4_clkctrl_clk_enable(struct clk_hw *hw)
 		}
 	}
 
+	if (!clk->enable_bit)
+		return 0;
+
 	val = ti_clk_ll_ops->clk_readl(&clk->enable_reg);
 
 	val &= ~OMAP4_MODULEMODE_MASK;
@@ -179,7 +179,7 @@ static void _omap4_clkctrl_clk_disable(struct clk_hw *hw)
 	union omap4_timeout timeout = { 0 };
 
 	if (!clk->enable_bit)
-		return;
+		goto exit;
 
 	val = ti_clk_ll_ops->clk_readl(&clk->enable_reg);
 
-- 
2.21.0

             reply	other threads:[~2019-05-06 21:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-06 21:08 Tony Lindgren [this message]
2019-05-21 18:54 ` [PATCH] clk: ti: clkctrl: Fix clkdm_clk handling Stephen Boyd

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