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Sat, 10 Oct 2026 04:56:12 -0700 (PDT) From: Luca Leonardo Scorcia To: linux-mediatek@lists.infradead.org Cc: Luca Leonardo Scorcia , Chunfeng Yun , Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Stephen Boyd , Brian Masney , Jerome Brunet , Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Nicolas Frattaroli , Chen-Yu Tsai , Fabien Parent , chunhui dai , CK Hu , linux-arm-kernel@lists.infradead.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 6/7] drm/mediatek: mtk_hdmi: Improve the secure output bit toggle Date: Sat, 10 Oct 2026 13:54:06 +0200 Message-ID: <20261010115539.9237-7-l.scorcia@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261010115539.9237-1-l.scorcia@gmail.com> References: <20261010115539.9237-1-l.scorcia@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The secure output control bit toggle for mt2701/mt8167 currently sets bit 0 (DEEP_COLOR_EN), 1-2 (DEEP_COLOR_MODE), 15 (HDMI_PSECUR_EN) and 31 (HDMI_PCLK_FREE_RUN_EN) in the same operation, but only bit 15 is actually controlling the HDMI_PSECUR_EN bit, the rest of them are already being set in separate operations later. Add a define for bit 15 and clean up the bit update operation. Fixes: 0fc721b2968e ("drm/mediatek: add hdmi driver for MT2701 and MT7623") Signed-off-by: Luca Leonardo Scorcia --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 2 +- drivers/gpu/drm/mediatek/mtk_hdmi_regs.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 9896eaf81e7e..781177a1f190 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -63,7 +63,7 @@ static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable) if (hdmi->conf && hdmi->conf->tz_disabled) regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, - 0x80008005, enable ? 0x80000005 : 0x8000); + HDMI_PSECUR_EN, enable ? 0 : HDMI_PSECUR_EN); else arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 0x80000000, 0, 0, 0, 0, 0, &res); diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h b/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h index 2050ba45b23a..e0c35277c553 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h @@ -219,6 +219,7 @@ #define DEEP_COLOR_EN BIT(0) #define HDMI_AUDIO_TEST_SEL BIT(8) #define HDMI2P0_EN BIT(11) +#define HDMI_PSECUR_EN BIT(15) #define HDMI_OUT_FIFO_EN BIT(16) #define HDMI_OUT_FIFO_CLK_INV BIT(17) #define MHL_MODE_ON BIT(28) -- 2.43.0