linux-kernel - Re: [PATCH v2 1/6] clk: ingenic: Make PLL clock "od" field optional

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Message-Id: <20221027215104.E8CB4C433D6@smtp.kernel.org>
Date:   Thu, 27 Oct 2022 14:51:02 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Aidan MacDonald <aidanmacdonald.0x0@...il.com>,
        Paul Cercueil <paul@...pouillou.net>
Cc:     mturquette@...libre.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, zhouyu@...yeetech.com,
        linux-mips@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/6] clk: ingenic: Make PLL clock "od" field optional

Quoting Aidan MacDonald (2022-10-27 14:40:02)
> 
> Paul Cercueil <paul@...pouillou.net> writes:
> 
> > Hi Aidan,
> >
> > Le mer. 26 oct. 2022 à 20:43:40 +0100, Aidan MacDonald
> > <aidanmacdonald.0x0@...il.com> a écrit :
> >> Add support for defining PLL clocks with od_bits = 0, meaning that
> >> OD is fixed to 1 and there is no OD field in the register. In this
> >> case od_max must also be 0, which is enforced with BUG_ON().
> >> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
> >> ---
> >> v1 -> v2: Simplify od lookup in ingenic_pll_recalc_rate() and
> >>           enforce od_max == 0 when od_bits is zero.
> >>  drivers/clk/ingenic/cgu.c | 21 +++++++++++++++------
> >>  drivers/clk/ingenic/cgu.h |  3 ++-
> >>  2 files changed, 17 insertions(+), 7 deletions(-)
> >> diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
> >> index 861c50d6cb24..3481129114b1 100644
> >> --- a/drivers/clk/ingenic/cgu.c
> >> +++ b/drivers/clk/ingenic/cgu.c
> >> @@ -83,7 +83,7 @@ ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long
> >> parent_rate)
> >>      const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
> >>      struct ingenic_cgu *cgu = ingenic_clk->cgu;
> >>      const struct ingenic_cgu_pll_info *pll_info;
> >> -    unsigned m, n, od_enc, od;
> >> +    unsigned m, n, od, od_enc = 0;
> >>      bool bypass;
> >>      u32 ctl;
> >> @@ -96,8 +96,11 @@ ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long
> >> parent_rate)
> >>      m += pll_info->m_offset;
> >>      n = (ctl >> pll_info->n_shift) & GENMASK(pll_info->n_bits - 1, 0);
> >>      n += pll_info->n_offset;
> >> -    od_enc = ctl >> pll_info->od_shift;
> >> -    od_enc &= GENMASK(pll_info->od_bits - 1, 0);
> >> +
> >> +    if (pll_info->od_bits > 0) {
> >> +            od_enc = ctl >> pll_info->od_shift;
> >> +            od_enc &= GENMASK(pll_info->od_bits - 1, 0);
> >> +    }
> >>      if (pll_info->bypass_bit >= 0) {
> >>              ctl = readl(cgu->base + pll_info->bypass_reg);
> >> @@ -112,7 +115,11 @@ ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long
> >> parent_rate)
> >>              if (pll_info->od_encoding[od] == od_enc)
> >>                      break;
> >>      }
> >
> > I'd add a space there.
> >
> > With that:
> > Reviewed-by: Paul Cercueil <paul@...pouillou.net>
> >
> 
> Already done; the space is there in my outbox and on lore.kernel.org.
> I think you might've accidentally removed it. Stephen's already
> applied the series anyway, so...
> 

I fixed the whitespace.