From: Abel Vesa <abel.vesa@linaro.org>
To: Marek Vasut <marex@denx.de>
Cc: linux-clk@vger.kernel.org, Abel Vesa <abel.vesa@nxp.com>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
NXP Linux Team <linux-imx@nxp.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] clk: imx: pll14xx: Add 320 MHz and 640 MHz entries for PLL146x
Date: Fri, 4 Nov 2022 23:34:55 +0200 [thread overview]
Message-ID: <Y2WFf1QOzhHHg0vE@linaro.org> (raw)
In-Reply-To: <20221031204838.195292-1-marex@denx.de>
On 22-10-31 21:48:38, Marek Vasut wrote:
> The PLL146x is used to implement SYS_PLL3 on i.MX8MP and can be used
> to drive UARTn_ROOT clock. By setting the PLL3 to 320 MHz or 640 MHz,
> the PLL3 output can be divided down to supply UARTn_ROOT clock with
> precise 64 MHz, which divided down further by 16x oversampling factor
> used by the i.MX UART core yields 4 Mbdps baud base for the UART IP.
> This is useful e.g. for BCM bluetooth chips, which can operate up to
> 4 Mbdps.
>
> Add 320 MHz and 640 MHz entries so the PLL can be configured accordingly.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
> ---
> Cc: Abel Vesa <abel.vesa@nxp.com>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Stephen Boyd <sboyd@kernel.org>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Cc: linux-arm-kernel@lists.infradead.org
> To: linux-clk@vger.kernel.org
> ---
> drivers/clk/imx/clk-pll14xx.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
> index 1d0f79e9c3467..828336873a98f 100644
> --- a/drivers/clk/imx/clk-pll14xx.c
> +++ b/drivers/clk/imx/clk-pll14xx.c
> @@ -54,7 +54,9 @@ static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = {
> PLL_1416X_RATE(800000000U, 200, 3, 1),
> PLL_1416X_RATE(750000000U, 250, 2, 2),
> PLL_1416X_RATE(700000000U, 350, 3, 2),
> + PLL_1416X_RATE(640000000U, 320, 3, 2),
> PLL_1416X_RATE(600000000U, 300, 3, 2),
> + PLL_1416X_RATE(320000000U, 160, 3, 2),
> };
>
> static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = {
> --
> 2.35.1
>
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next prev parent reply other threads:[~2022-11-04 21:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-31 20:48 [PATCH] clk: imx: pll14xx: Add 320 MHz and 640 MHz entries for PLL146x Marek Vasut
2022-11-04 21:34 ` Abel Vesa [this message]
2022-11-21 15:59 ` Abel Vesa
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