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[98.239.145.235]) by smtp.gmail.com with ESMTPSA id m37-20020a026d25000000b0035b3e0a3243sm7415073jac.57.2022.10.06.07.38.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Oct 2022 07:38:42 -0700 (PDT) Date: Thu, 6 Oct 2022 10:38:40 -0400 From: Brian Masney To: Johan Hovold Cc: Bjorn Andersson , Andy Gross , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp: fix ufs_card_phy ref clock Message-ID: References: <20221005143305.388-1-johan+linaro@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221005143305.388-1-johan+linaro@kernel.org> User-Agent: Mutt/2.2.7 (2022-08-07) X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 05, 2022 at 04:33:05PM +0200, Johan Hovold wrote: > The GCC_UFS_REF_CLKREF_CLK must be enabled or the second UFS controller > fails to enumerate on sa8295p-adp. > > Note that the vendor kernel enables both GCC_UFS_REF_CLKREF_CLK and > GCC_UFS_1_CARD_CLKREF_CLK and it is possible that the former should be > modelled as a parent of the latter. The clock driver also has a > GCC_UFS_CARD_CLKREF_CLK clock which the firmware appears to enable on > the ADP. > > The usual lack of documentation for Qualcomm SoCs makes this a highly > annoying guessing game, but as the second controller works on the ADP > without either card reference clock enabled, only enable > GCC_UFS_REF_CLKREF_CLK for now. > > Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform") > Signed-off-by: Johan Hovold Reviewed-by: Brian Masney