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[155.158.56.142]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b65e8581780sm1082737866b.31.2025.10.21.08.23.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Oct 2025 08:23:11 -0700 (PDT) From: muhammed.efecetin.67@gmail.com X-Google-Original-From: muhammed.efecetin67@gmail.com To: linux-rockchip@lists.infradead.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, heiko@sntech.de, neil.armstrong@linaro.org, lee@kernel.org, rafael@kernel.org, efectn@protonmail.com, daniel.lezcano@linaro.org Subject: [PATCH v3 4/5] thermal: khadas_mcu_fan: add support for Khadas Edge 2 Date: Tue, 21 Oct 2025 17:22:44 +0200 Message-ID: <68fbedccd22459c3fb5bff8a41c485075799a111.1761059314.git.efectn@protonmail.com> X-Mailer: git-send-email 2.51.1.dirty In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Muhammed Efe Cetin Fan control on the Khadas Edge 2 is controlled with the 0x8A register, using percentage values from 0 to 100, whereas there are only 3 constant steps in previous Khadas boards. Therefore, i adjusted max_level and fan_ctrl_reg when the mcu node is defined with khadas,mcu-edge2 compatible. Signed-off-by: Muhammed Efe Cetin --- drivers/thermal/khadas_mcu_fan.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/thermal/khadas_mcu_fan.c b/drivers/thermal/khadas_mcu_fan.c index d35e5313bea41..e3ac4fb6d1f82 100644 --- a/drivers/thermal/khadas_mcu_fan.c +++ b/drivers/thermal/khadas_mcu_fan.c @@ -15,10 +15,13 @@ #include #define MAX_LEVEL 3 +#define MAX_LEVEL_EDGE2 100 struct khadas_mcu_fan_ctx { struct khadas_mcu *mcu; unsigned int level; + unsigned int max_level; + unsigned int fan_ctrl_reg; struct thermal_cooling_device *cdev; }; @@ -26,8 +29,7 @@ static int khadas_mcu_fan_set_level(struct khadas_mcu_fan_ctx *ctx, unsigned int level) { int ret; - - ret = regmap_write(ctx->mcu->regmap, KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG, + ret = regmap_write(ctx->mcu->regmap, ctx->fan_ctrl_reg, level); if (ret) return ret; @@ -40,7 +42,9 @@ static int khadas_mcu_fan_set_level(struct khadas_mcu_fan_ctx *ctx, static int khadas_mcu_fan_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { - *state = MAX_LEVEL; + struct khadas_mcu_fan_ctx *ctx = cdev->devdata; + + *state = ctx->max_level; return 0; } @@ -61,7 +65,7 @@ khadas_mcu_fan_set_cur_state(struct thermal_cooling_device *cdev, { struct khadas_mcu_fan_ctx *ctx = cdev->devdata; - if (state > MAX_LEVEL) + if (state > ctx->max_level) return -EINVAL; if (state == ctx->level) @@ -88,6 +92,14 @@ static int khadas_mcu_fan_probe(struct platform_device *pdev) if (!ctx) return -ENOMEM; ctx->mcu = mcu; + ctx->max_level = MAX_LEVEL; + ctx->fan_ctrl_reg = KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG; + + if (of_device_is_compatible(mcu->dev->of_node, "khadas,mcu-edge2")) { + ctx->fan_ctrl_reg = KHADAS_MCU_EDGE2_FAN_CTRL_REG; + ctx->max_level = MAX_LEVEL_EDGE2; + } + platform_set_drvdata(pdev, ctx); cdev = devm_thermal_of_cooling_device_register(dev->parent, -- 2.51.1.dirty