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Fri, 05 Sep 2025 14:40:05 -0700 (PDT) From: Kevin Hilman To: Alexander Stein , Tero Kristo , Michael Turquette , Stephen Boyd Cc: Matthias Schiffer , linux-omap@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Stein Subject: Re: [PATCH 1/1] clk: ti: am33xx: keep WKUP_DEBUGSS_CLKCTRL enabled In-Reply-To: <20250825140812.2222185-1-alexander.stein@ew.tq-group.com> References: <20250825140812.2222185-1-alexander.stein@ew.tq-group.com> Date: Fri, 05 Sep 2025 14:40:04 -0700 Message-ID: <7hms78a897.fsf@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Alexander Stein writes: > From: Matthias Schiffer > > As described in AM335x Errata Advisory 1.0.42, WKUP_DEBUGSS_CLKCTRL > can't be disabled - the clock module will just be stuck in transitioning > state forever, resulting in the following warning message after the wait > loop times out: > > l3-aon-clkctrl:0000:0: failed to disable > > Just add the clock to enable_init_clks, so no attempt is made to disable > it. > > Signed-off-by: Matthias Schiffer > Signed-off-by: Alexander Stein Acked-by: Kevin Hilman > --- > drivers/clk/ti/clk-33xx.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/clk/ti/clk-33xx.c b/drivers/clk/ti/clk-33xx.c > index 85c50ea39e6da..9269e6a0db6a4 100644 > --- a/drivers/clk/ti/clk-33xx.c > +++ b/drivers/clk/ti/clk-33xx.c > @@ -258,6 +258,8 @@ static const char *enable_init_clks[] = { > "dpll_ddr_m2_ck", > "dpll_mpu_m2_ck", > "l3_gclk", > + /* WKUP_DEBUGSS_CLKCTRL - disable fails, AM335x Errata Advisory 1.0.42 */ > + "l3-aon-clkctrl:0000:0", > /* AM3_L3_L3_MAIN_CLKCTRL, needed during suspend */ > "l3-clkctrl:00bc:0", > "l4hs_gclk", > -- > 2.43.0