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Message-ID: <20151124063947.GL11999@tiger>
Date: Tue, 24 Nov 2015 14:39:47 +0800
From: Shawn Guo <shawnguo@...nel.org>
To: Bai Ping <b51503@...escale.com>
Cc: kernel@...gutronix.de, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] clk: imx: add 'is_prepared' clk_ops callback for pllv3
clk
On Tue, Nov 03, 2015 at 02:06:09AM +0800, Bai Ping wrote:
> Add 'is_prepared' callback function for pllv3 type clk to make sure when
> the system is bootup, the unused clk is in a known state to match the
> prepare count info.
>
> Signed-off-by: Bai Ping <b51503@...escale.com>
Please resend the patch with following clk maintainers and list on copy.
Also remember to add Lucas' Reviewed-by: tag.
COMMON CLK FRAMEWORK
M: Michael Turquette <mturquette@...libre.com>
M: Stephen Boyd <sboyd@...eaurora.org>
L: linux-clk@...r.kernel.org
Shawn
> ---
> drivers/clk/imx/clk-pllv3.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
> index 6addf8f..c05c43d 100644
> --- a/drivers/clk/imx/clk-pllv3.c
> +++ b/drivers/clk/imx/clk-pllv3.c
> @@ -97,6 +97,16 @@ static void clk_pllv3_unprepare(struct clk_hw *hw)
> writel_relaxed(val, pll->base);
> }
>
> +static int clk_pllv3_is_prepared(struct clk_hw *hw)
> +{
> + struct clk_pllv3 *pll = to_clk_pllv3(hw);
> +
> + if (readl_relaxed(pll->base) & BM_PLL_LOCK)
> + return 1;
> +
> + return 0;
> +}
> +
> static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw,
> unsigned long parent_rate)
> {
> @@ -139,6 +149,7 @@ static int clk_pllv3_set_rate(struct clk_hw *hw, unsigned long rate,
> static const struct clk_ops clk_pllv3_ops = {
> .prepare = clk_pllv3_prepare,
> .unprepare = clk_pllv3_unprepare,
> + .is_prepared = clk_pllv3_is_prepared,
> .recalc_rate = clk_pllv3_recalc_rate,
> .round_rate = clk_pllv3_round_rate,
> .set_rate = clk_pllv3_set_rate,
> @@ -193,6 +204,7 @@ static int clk_pllv3_sys_set_rate(struct clk_hw *hw, unsigned long rate,
> static const struct clk_ops clk_pllv3_sys_ops = {
> .prepare = clk_pllv3_prepare,
> .unprepare = clk_pllv3_unprepare,
> + .is_prepared = clk_pllv3_is_prepared,
> .recalc_rate = clk_pllv3_sys_recalc_rate,
> .round_rate = clk_pllv3_sys_round_rate,
> .set_rate = clk_pllv3_sys_set_rate,
> @@ -265,6 +277,7 @@ static int clk_pllv3_av_set_rate(struct clk_hw *hw, unsigned long rate,
> static const struct clk_ops clk_pllv3_av_ops = {
> .prepare = clk_pllv3_prepare,
> .unprepare = clk_pllv3_unprepare,
> + .is_prepared = clk_pllv3_is_prepared,
> .recalc_rate = clk_pllv3_av_recalc_rate,
> .round_rate = clk_pllv3_av_round_rate,
> .set_rate = clk_pllv3_av_set_rate,
> @@ -279,6 +292,7 @@ static unsigned long clk_pllv3_enet_recalc_rate(struct clk_hw *hw,
> static const struct clk_ops clk_pllv3_enet_ops = {
> .prepare = clk_pllv3_prepare,
> .unprepare = clk_pllv3_unprepare,
> + .is_prepared = clk_pllv3_is_prepared,
> .recalc_rate = clk_pllv3_enet_recalc_rate,
> };
>
> --
> 1.9.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
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