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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84282221059sm8594381b3a.7.2026.06.05.05.20.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Jun 2026 05:21:02 -0700 (PDT) From: phucduc.bui@gmail.com To: Kuninori Morimoto , Mark Brown , Geert Uytterhoeven Cc: Liam Girdwood , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Magnus Damm , Jaroslav Kysela , Takashi Iwai , linux-sound@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH v4 10/10] ASoC: renesas: fsi: Add SPU clock control in hw_startup/shutdown Date: Fri, 5 Jun 2026 19:19:54 +0700 Message-ID: <20260605121955.105661-11-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260605121955.105661-1-phucduc.bui@gmail.com> References: <20260605121955.105661-1-phucduc.bui@gmail.com> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc Enable and disable the SPU clock in fsi_hw_startup() and fsi_hw_shutdown() to ensure the clock is active while the driver accesses hardware registers. Suggested-by: Kuninori Morimoto Signed-off-by: bui duc phuc --- sound/soc/renesas/fsi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/sound/soc/renesas/fsi.c b/sound/soc/renesas/fsi.c index 6537321242c0..d7cc5a14a099 100644 --- a/sound/soc/renesas/fsi.c +++ b/sound/soc/renesas/fsi.c @@ -1585,6 +1585,19 @@ static int fsi_hw_startup(struct fsi_priv *fsi, struct device *dev) { u32 data = 0; + int ret; + + /* enable spu clock */ + if (fsi->master->clk_spu) { + scoped_guard(spinlock_irqsave, &fsi->master->lock) { + if (fsi->master->spu_count == 0) { + ret = clk_enable(fsi->master->clk_spu); + if (ret < 0) + return ret; + } + fsi->master->spu_count++; + } + } /* clock setting */ if (fsi_is_clk_master(fsi)) @@ -1642,6 +1655,12 @@ static int fsi_hw_shutdown(struct fsi_priv *fsi, /* stop master clock */ if (fsi_is_clk_master(fsi)) return fsi_clk_disable(dev, fsi); + if (fsi->master->clk_spu) { + scoped_guard(spinlock_irqsave, &fsi->master->lock) { + if (--fsi->master->spu_count == 0) + clk_disable(fsi->master->clk_spu); + } + } return 0; } -- 2.43.0