* [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x @ 2026-02-17 9:41 Ian Ray 2026-02-17 9:54 ` Marco Felsch 0 siblings, 1 reply; 4+ messages in thread From: Ian Ray @ 2026-02-17 9:41 UTC (permalink / raw) To: Abel Vesa, Peng Fan, Michael Turquette, Stephen Boyd, Frank Li, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam Cc: Ian Ray, linux-clk, imx, linux-arm-kernel, linux-kernel The PLL1443x is used to implement VIDEO_PLL1 on i.MX8MP and can be used for dual-channel LVDS displays. Add new rate 756 MHz, which divides by 7 to provide 108 MHz LVDS pixel clock, and by 2 for 378 MHz LDB clock. Signed-off-by: Ian Ray <ian.ray@gehealthcare.com> --- drivers/clk/imx/clk-pll14xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c index 36d0e80b55b8..84279cf9f12b 100644 --- a/drivers/clk/imx/clk-pll14xx.c +++ b/drivers/clk/imx/clk-pll14xx.c @@ -63,6 +63,7 @@ static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = { static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = { PLL_1443X_RATE(1039500000U, 173, 2, 1, 16384), + PLL_1443X_RATE(756000000U, 252, 2, 2, 0), PLL_1443X_RATE(650000000U, 325, 3, 2, 0), PLL_1443X_RATE(594000000U, 198, 2, 2, 0), PLL_1443X_RATE(519750000U, 173, 2, 2, 16384), -- 2.49.0 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x 2026-02-17 9:41 [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x Ian Ray @ 2026-02-17 9:54 ` Marco Felsch 2026-02-17 10:23 ` Ian Ray 0 siblings, 1 reply; 4+ messages in thread From: Marco Felsch @ 2026-02-17 9:54 UTC (permalink / raw) To: Ian Ray Cc: Abel Vesa, Peng Fan, Michael Turquette, Stephen Boyd, Frank Li, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, linux-clk, imx, linux-arm-kernel, linux-kernel Hi Ian, On 26-02-17, Ian Ray wrote: > The PLL1443x is used to implement VIDEO_PLL1 on i.MX8MP and can be used > for dual-channel LVDS displays. Add new rate 756 MHz, which divides by > 7 to provide 108 MHz LVDS pixel clock, and by 2 for 378 MHz LDB clock. the on-demand rate calculation doe for the PLL1443X PLLs is not sufficient for you? Regards, Marco > > Signed-off-by: Ian Ray <ian.ray@gehealthcare.com> > --- > drivers/clk/imx/clk-pll14xx.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c > index 36d0e80b55b8..84279cf9f12b 100644 > --- a/drivers/clk/imx/clk-pll14xx.c > +++ b/drivers/clk/imx/clk-pll14xx.c > @@ -63,6 +63,7 @@ static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = { > > static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = { > PLL_1443X_RATE(1039500000U, 173, 2, 1, 16384), > + PLL_1443X_RATE(756000000U, 252, 2, 2, 0), > PLL_1443X_RATE(650000000U, 325, 3, 2, 0), > PLL_1443X_RATE(594000000U, 198, 2, 2, 0), > PLL_1443X_RATE(519750000U, 173, 2, 2, 16384), > -- > 2.49.0 > > > -- #gernperDu #CallMeByMyFirstName Pengutronix e.K. | | Steuerwalder Str. 21 | https://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 | ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x 2026-02-17 9:54 ` Marco Felsch @ 2026-02-17 10:23 ` Ian Ray 2026-02-17 11:12 ` Marco Felsch 0 siblings, 1 reply; 4+ messages in thread From: Ian Ray @ 2026-02-17 10:23 UTC (permalink / raw) To: Marco Felsch Cc: Abel Vesa, Peng Fan, Michael Turquette, Stephen Boyd, Frank Li, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, linux-clk, imx, linux-arm-kernel, linux-kernel On Tue, Feb 17, 2026 at 10:54:49AM +0100, Marco Felsch wrote: > CAUTION: This email originated from outside of GE HealthCare. Only open links or attachments if you trust the sender. Report suspicious emails using Outlook’s “Report” button. > > Hi Ian, > > On 26-02-17, Ian Ray wrote: > > The PLL1443x is used to implement VIDEO_PLL1 on i.MX8MP and can be used > > for dual-channel LVDS displays. Add new rate 756 MHz, which divides by > > 7 to provide 108 MHz LVDS pixel clock, and by 2 for 378 MHz LDB clock. > > the on-demand rate calculation doe for the PLL1443X PLLs is not > sufficient for you? Apologies! The on-demand rate calculation does indeed work. So please ignore this patch. (The patch was needed on kernel 6.12 IIRC, and I automatically re-based it on 6.18 without re-testing. Once again, apologies for the noise.) > > Regards, > Marco > > > > > > Signed-off-by: Ian Ray <ian.ray@gehealthcare.com> > > --- > > drivers/clk/imx/clk-pll14xx.c | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c > > index 36d0e80b55b8..84279cf9f12b 100644 > > --- a/drivers/clk/imx/clk-pll14xx.c > > +++ b/drivers/clk/imx/clk-pll14xx.c > > @@ -63,6 +63,7 @@ static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = { > > > > static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = { > > PLL_1443X_RATE(1039500000U, 173, 2, 1, 16384), > > + PLL_1443X_RATE(756000000U, 252, 2, 2, 0), > > PLL_1443X_RATE(650000000U, 325, 3, 2, 0), > > PLL_1443X_RATE(594000000U, 198, 2, 2, 0), > > PLL_1443X_RATE(519750000U, 173, 2, 2, 16384), > > -- > > 2.49.0 > > > > > > > > -- > #gernperDu > #CallMeByMyFirstName > > Pengutronix e.K. | | > Steuerwalder Str. 21 | https://www.pengutronix.de/ | > 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 | ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x 2026-02-17 10:23 ` Ian Ray @ 2026-02-17 11:12 ` Marco Felsch 0 siblings, 0 replies; 4+ messages in thread From: Marco Felsch @ 2026-02-17 11:12 UTC (permalink / raw) To: Ian Ray Cc: Abel Vesa, Peng Fan, Michael Turquette, Stephen Boyd, Frank Li, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, linux-clk, imx, linux-arm-kernel, linux-kernel On 26-02-17, Ian Ray wrote: > On Tue, Feb 17, 2026 at 10:54:49AM +0100, Marco Felsch wrote: > > CAUTION: This email originated from outside of GE HealthCare. Only open links or attachments if you trust the sender. Report suspicious emails using Outlook’s “Report” button. > > > > Hi Ian, > > > > On 26-02-17, Ian Ray wrote: > > > The PLL1443x is used to implement VIDEO_PLL1 on i.MX8MP and can be used > > > for dual-channel LVDS displays. Add new rate 756 MHz, which divides by > > > 7 to provide 108 MHz LVDS pixel clock, and by 2 for 378 MHz LDB clock. > > > > the on-demand rate calculation doe for the PLL1443X PLLs is not > > sufficient for you? > > Apologies! The on-demand rate calculation does indeed work. So please > ignore this patch. > > (The patch was needed on kernel 6.12 IIRC, and I automatically re-based > it on 6.18 without re-testing. Once again, apologies for the noise.) No worries, sometimes there are needs to very specific PLL setting due to emc or so but these are rare cases and therefore I asked :) Regards, Marco > > > > > Regards, > > Marco > > > > > > > > > > Signed-off-by: Ian Ray <ian.ray@gehealthcare.com> > > > --- > > > drivers/clk/imx/clk-pll14xx.c | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c > > > index 36d0e80b55b8..84279cf9f12b 100644 > > > --- a/drivers/clk/imx/clk-pll14xx.c > > > +++ b/drivers/clk/imx/clk-pll14xx.c > > > @@ -63,6 +63,7 @@ static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = { > > > > > > static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = { > > > PLL_1443X_RATE(1039500000U, 173, 2, 1, 16384), > > > + PLL_1443X_RATE(756000000U, 252, 2, 2, 0), > > > PLL_1443X_RATE(650000000U, 325, 3, 2, 0), > > > PLL_1443X_RATE(594000000U, 198, 2, 2, 0), > > > PLL_1443X_RATE(519750000U, 173, 2, 2, 16384), > > > -- > > > 2.49.0 > > > > > > > > > > > > > -- > > #gernperDu > > #CallMeByMyFirstName > > > > Pengutronix e.K. | | > > Steuerwalder Str. 21 | https://www.pengutronix.de/ | > > 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 | > -- #gernperDu #CallMeByMyFirstName Pengutronix e.K. | | Steuerwalder Str. 21 | https://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 | ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2026-02-17 11:13 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2026-02-17 9:41 [PATCH] clk: imx: pll14xx: Add 756 MHz entry for PLL1443x Ian Ray 2026-02-17 9:54 ` Marco Felsch 2026-02-17 10:23 ` Ian Ray 2026-02-17 11:12 ` Marco Felsch
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