linux-kernel - [PATCH 0/2] clk: qcom: gpucc-*: stop requesting register resource

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Message-Id: <20240628-gpucc-no-request-v1-0-b680c2f90817@linaro.org>
Date: Fri, 28 Jun 2024 08:20:21 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: Rob Clark <robdclark@...il.com>, linux-arm-msm@...r.kernel.org, 
 linux-clk@...r.kernel.org, freedreno@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] clk: qcom: gpucc-*: stop requesting register resource

Testing of [1] pointed out that on all modern Qualcomm platforms GPU
clock controller shares regiser space with the GMU. All gpucc drivers
use (internally) devm_platform_ioremap_resource(), preventing the GPU
driver from using devm_ioremap_resource() on its own. As GMU register
space includes gpucc's one, make gpucc drivers use non-requesting
helper, allowing GPU to take over the bigger memory region.

[1] https://patchwork.freedesktop.org/series/134401/

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
Dmitry Baryshkov (2):
      clk: qocm: add qcom_cc_map_norequest
      clk: qcom: gpucc-*: use qcom_cc_map_norequest

 drivers/clk/qcom/common.c         | 20 ++++++++++++++++++++
 drivers/clk/qcom/common.h         |  2 ++
 drivers/clk/qcom/gpucc-qcm2290.c  |  2 +-
 drivers/clk/qcom/gpucc-sa8775p.c  |  2 +-
 drivers/clk/qcom/gpucc-sc7180.c   |  2 +-
 drivers/clk/qcom/gpucc-sc7280.c   |  2 +-
 drivers/clk/qcom/gpucc-sc8280xp.c |  2 +-
 drivers/clk/qcom/gpucc-sdm845.c   |  2 +-
 drivers/clk/qcom/gpucc-sm6115.c   |  2 +-
 drivers/clk/qcom/gpucc-sm6125.c   |  2 +-
 drivers/clk/qcom/gpucc-sm6350.c   |  2 +-
 drivers/clk/qcom/gpucc-sm6375.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8150.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8250.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8350.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8450.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8550.c   |  2 +-
 drivers/clk/qcom/gpucc-sm8650.c   |  2 +-
 drivers/clk/qcom/gpucc-x1e80100.c |  2 +-
 19 files changed, 39 insertions(+), 17 deletions(-)
---
base-commit: 5d98d5e70f505b7278336de493eba94cde5526b3
change-id: 20240627-gpucc-no-request-cb6b5f72e8da

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>