linux-kernel - Re: [PATCH] clk: mediatek: mt8365: Fix inverted topclk operations

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Message-ID: <adca53e5-5c26-e087-f142-5a6f9e9961db@collabora.com>
Date:   Mon, 15 May 2023 16:17:52 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Markus Schneider-Pargmann <msp@...libre.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Alexandre Mergnat <amergnat@...libre.com>
Subject: Re: [PATCH] clk: mediatek: mt8365: Fix inverted topclk operations

Il 15/05/23 16:01, Markus Schneider-Pargmann ha scritto:
> On Mon, May 15, 2023 at 01:49:54PM +0200, AngeloGioacchino Del Regno wrote:
>> Il 12/05/23 13:51, Matthias Brugger ha scritto:
>>>
>>>
>>> On 11/05/2023 15:32, Markus Schneider-Pargmann wrote:
>>>> The given operations are inverted for the wrong registers which makes
>>>> multiple of the mt8365 hardware units unusable. In my setup at least usb
>>>> did not work.
>>>>
>>>> Fixed by swapping the operations with the inverted ones.
>>
>> ...with the not inverted ones, you mean!
> 
> Actually now I am not sure how to express it correctly, maybe I should
> have just left that sentence out of the commit message.
> 
> I meant replacing the no_setclr_inv with no_setclr for TOP0 and no_setclr with
> no_setclr_inv for TOP1/2.
> 

Yeah, the sentence may be a bit confusing, but you're actually inverting the
inverted ones and the non-inverted ones.

It's fine, anyway, this commit can get picked as-is imo :-D

> Best,
> Markus
> 
>>
>> Anyway,
>>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>>
>>>>
>>>> Reported-by: Alexandre Mergnat <amergnat@...libre.com>
>>>> Fixes: 905b7430d3cc ("clk: mediatek: mt8365: Convert simple_gate to
>>>> mtk_gate clocks")
>>>> Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
>>>
>>> Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
>>>
>>>> ---
>>>>    drivers/clk/mediatek/clk-mt8365.c | 6 +++---
>>>>    1 file changed, 3 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/drivers/clk/mediatek/clk-mt8365.c b/drivers/clk/mediatek/clk-mt8365.c
>>>> index 6b4e193f648d..6d785ec5754d 100644
>>>> --- a/drivers/clk/mediatek/clk-mt8365.c
>>>> +++ b/drivers/clk/mediatek/clk-mt8365.c
>>>> @@ -583,15 +583,15 @@ static const struct mtk_gate_regs top2_cg_regs = {
>>>>    #define GATE_TOP0(_id, _name, _parent, _shift)            \
>>>>        GATE_MTK(_id, _name, _parent, &top0_cg_regs,        \
>>>> -         _shift, &mtk_clk_gate_ops_no_setclr_inv)
>>>> +         _shift, &mtk_clk_gate_ops_no_setclr)
>>>>    #define GATE_TOP1(_id, _name, _parent, _shift)            \
>>>>        GATE_MTK(_id, _name, _parent, &top1_cg_regs,        \
>>>> -         _shift, &mtk_clk_gate_ops_no_setclr)
>>>> +         _shift, &mtk_clk_gate_ops_no_setclr_inv)
>>>>    #define GATE_TOP2(_id, _name, _parent, _shift)            \
>>>>        GATE_MTK(_id, _name, _parent, &top2_cg_regs,        \
>>>> -         _shift, &mtk_clk_gate_ops_no_setclr)
>>>> +         _shift, &mtk_clk_gate_ops_no_setclr_inv)
>>>>    static const struct mtk_gate top_clk_gates[] = {
>>>>        GATE_TOP0(CLK_TOP_CONN_32K, "conn_32k", "clk32k", 10),
>>
>>