From: Sascha Hauer <sha@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org, ore@pengutronix.de, uol@pengutronix.de
Subject: Re: [PATCH master] clk: imx6: fix PLL exception for i.MX6DQ revision 1.0
Date: Thu, 3 Feb 2022 11:14:55 +0100 [thread overview]
Message-ID: <20220203101455.GJ23490@pengutronix.de> (raw)
In-Reply-To: <20220202195524.30740-1-a.fatoum@pengutronix.de>
On Wed, Feb 02, 2022 at 08:55:24PM +0100, Ahmad Fatoum wrote:
> cpu_is_mx6* and imx_silicon_revision access static variables only
> initialized in imx_init(). Use the alternative functions instead, that
> will always consult the hardware to determine the version.
> This requires us to know beforehand that we run on an i.MX6, but this
> is a given when probing the imx6-ccm driver.
>
> Other instances of this issue were removed in 37bc313add40 ("clk: imx6:
> fix use of cpu_is_mx6* before they are initialized"), but this instance
> was reintroduced as part of b534f79112f0 ("clk: imx6: Fix procedure to
> switch the parent of LDB_DI_CLK").
>
> This change only affects i.MX6D/Q SoCs with exactly revision 1.0 and
> aligns their behavior to that of the Linux clock driver.
>
> Fixes: b534f79112f0 ("clk: imx6: Fix procedure to switch the parent of LDB_DI_CLK")
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
> drivers/clk/imx/clk-imx6.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/drivers/clk/imx/clk-imx6.c b/drivers/clk/imx/clk-imx6.c
> index 6935a8e85292..e3afcf7858bb 100644
> --- a/drivers/clk/imx/clk-imx6.c
> +++ b/drivers/clk/imx/clk-imx6.c
> @@ -60,8 +60,8 @@ static inline int cpu_mx6_is_plus(void)
>
> /* Audio/Video PLL post dividers don't work on i.MX6q revision 1.0 */
> static inline int cpu_has_working_video_pll_post_div(void) {
> - return !((cpu_is_mx6q() || cpu_is_mx6d()) &&
> - imx_silicon_revision() == IMX_CHIP_REV_1_0);
> + return !((cpu_mx6_is_mx6q() || cpu_mx6_is_mx6d()) &&
> + __imx6_cpu_revision() == IMX_CHIP_REV_1_0);
> }
>
> /* i.MX6 Quad/Dual/DualLite/Solo are all affected */
> --
> 2.30.2
>
>
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> barebox@lists.infradead.org
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prev parent reply other threads:[~2022-02-03 10:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-02 19:55 Ahmad Fatoum
2022-02-03 10:14 ` Sascha Hauer [this message]
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