linux-kernel - [PATCH 0/2] qcom: add basic interconnect support to UFS

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Message-Id: <20221117104957.254648-1-bmasney@redhat.com>
Date:   Thu, 17 Nov 2022 05:49:55 -0500
From:   Brian Masney <bmasney@...hat.com>
To:     andersson@...nel.org
Cc:     agross@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org
Subject: [PATCH 0/2] qcom: add basic interconnect support to UFS

This patch set adds very basic support for the interconnect framework
to the Qualcomm portion of the UFS framework since the firmware on
these platforms expects the interconnect votes to be present. The
maximum throughput is requested to match what's already done in a few
other drivers.

Here's the relevant entries from the interconnect_summary file in
debugfs that shows the two ICC paths are setup for the first UFS
host controller on the SA8540p automotive board (sc8280xp).

 node                                  tag          avg         peak
--------------------------------------------------------------------
xm_ufs_mem                                            0   4294967295
  1d84000.ufs                            0            0   4294967295
qns_a1noc_snoc                                        0   4294967295
  1d84000.ufs                            0            0   4294967295
qnm_gemnoc_cnoc                                     115   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0            0        40000
  884000.serial                          0          115          115
qhs_ufs_mem_cfg                                       0   4294967295
  1d84000.ufs                            0            0   4294967295
chm_apps                                            115   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0            0        40000
  884000.serial                          0          115          115
qnm_snoc_sf                                     1000000   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0      1000000      2500000
qns_gem_noc_cnoc                                    115   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0            0        40000
  884000.serial                          0          115          115
qns_llcc                                        1000000   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0      1000000      2500000
llcc_mc                                         1000000   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0      1000000      2500000
ebi                                             1000000   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0      1000000      2500000
qnm_aggre1_noc                                        0   4294967295
  1d84000.ufs                            0            0   4294967295
qns_gemnoc_sf                                   1000000   4294967295
  1d84000.ufs                            0            0   4294967295
  a6f8800.usb                            0      1000000      2500000


Brian Masney (2):
  scsi: ufs: ufs-qcom: add basic interconnect support
  arm64: dts: qcom: sc8280xp: add interconnect properties to ufs nodes

 arch/arm64/boot/dts/qcom/sc8280xp.dtsi |  8 ++++++++
 drivers/ufs/host/ufs-qcom.c            | 25 +++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

-- 
2.38.1