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Date: Mon, 19 Feb 2024 17:19:28 +0100
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Subject: Re: [PATCH 3/8] clk: qcom: clk-alpha-pll: Add HUAYRA_2290 support
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To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,
 Joerg Roedel <joro@8bytes.org>, Rob Herring <robh@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Bjorn Andersson <andersson@kernel.org>,
 Michael Turquette <mturquette@baylibre.com>, Stephen Boyd
 <sboyd@kernel.org>, Rob Clark <robdclark@gmail.com>,
 Abhinav Kumar <quic_abhinavk@quicinc.com>, Sean Paul <sean@poorly.run>,
 David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
 Marijn Suijten <marijn.suijten@somainline.org>,
 linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 Konrad Dybcio <konradybcio@kernel.org>, linux-arm-msm@vger.kernel.org,
 linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org,
 freedreno@lists.freedesktop.org
References: <20240219-topic-rb1_gpu-v1-0-d260fa854707@linaro.org>
 <20240219-topic-rb1_gpu-v1-3-d260fa854707@linaro.org>
 <CAA8EJpq8XvQm9B3RZq9PNMqA5VAqKUyVn5qt8-WEYMQMWniDZA@mail.gmail.com>
From: Konrad Dybcio <konrad.dybcio@linaro.org>
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On 19.02.2024 15:53, Dmitry Baryshkov wrote:
> On Mon, 19 Feb 2024 at 15:36, Konrad Dybcio <konrad.dybcio@linaro.org> wrote:
>>
>> Commit 134b55b7e19f ("clk: qcom: support Huayra type Alpha PLL")
>> introduced an entry to the alpha offsets array, but diving into QCM2290
>> downstream and some documentation, it turned out that the name Huayra
>> apparently has been used quite liberally across many chips, even with
>> noticeably different hardware.
>>
>> Introduce another set of offsets and a new configure function for the
>> Huayra PLL found on QCM2290. This is required e.g. for the consumers
>> of GPUCC_PLL0 to properly start.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
>> ---
>>  drivers/clk/qcom/clk-alpha-pll.c | 45 ++++++++++++++++++++++++++++++++++++++++
>>  drivers/clk/qcom/clk-alpha-pll.h |  3 +++
>>  2 files changed, 48 insertions(+)
>>
>> diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
>> index 8a412ef47e16..61b5abd13782 100644
>> --- a/drivers/clk/qcom/clk-alpha-pll.c
>> +++ b/drivers/clk/qcom/clk-alpha-pll.c
>> @@ -244,6 +244,19 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
>>                 [PLL_OFF_OPMODE] = 0x30,
>>                 [PLL_OFF_STATUS] = 0x3c,
>>         },
>> +       [CLK_ALPHA_PLL_TYPE_HUAYRA_2290] =  {
>> +               [PLL_OFF_L_VAL] = 0x04,
>> +               [PLL_OFF_ALPHA_VAL] = 0x08,
>> +               [PLL_OFF_USER_CTL] = 0x0c,
>> +               [PLL_OFF_CONFIG_CTL] = 0x10,
>> +               [PLL_OFF_CONFIG_CTL_U] = 0x14,
>> +               [PLL_OFF_CONFIG_CTL_U1] = 0x18,
>> +               [PLL_OFF_TEST_CTL] = 0x1c,
>> +               [PLL_OFF_TEST_CTL_U] = 0x20,
>> +               [PLL_OFF_TEST_CTL_U1] = 0x24,
>> +               [PLL_OFF_OPMODE] = 0x28,
>> +               [PLL_OFF_STATUS] = 0x38,
>> +       },
> 
> Can you please move them next to the standard huayra PLL regs?

Sure, no prob

Konrad