From 16ba0dc6eaf4d152126a855bc5c9a31f05abadb4 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Wed, 15 Nov 2017 14:56:45 +0200 Subject: dt-bindings: iio: at91-sama5d2_adc: add optional dma property Added property for DMA configuration of the device. Signed-off-by: Eugen Hristev Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt index 552e7a83951d..6469a4cd2a6d 100644 --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt @@ -17,6 +17,11 @@ Required properties: This property uses the IRQ edge types values: IRQ_TYPE_EDGE_RISING , IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH +Optional properties: + - dmas: Phandle to dma channel for the ADC. + - dma-names: Must be "rx" when dmas property is being used. + See ../../dma/dma.txt for details. + Example: adc: adc@fc030000 { @@ -31,4 +36,6 @@ adc: adc@fc030000 { vddana-supply = <&vdd_3v3_lp_reg>; vref-supply = <&vdd_3v3_lp_reg>; atmel,trigger-edge-type = ; + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>; + dma-names = "rx"; } -- cgit v1.2.3 From 098c5a6a14b7cb7727f370bcdcca693b3098e37f Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Wed, 25 Oct 2017 11:27:43 +0200 Subject: dt-bindings: iio: adc: stm32: add support for diff channels STM32H7 ADC channels may be configured either as single-ended or differential. Add 'st,adc-diff-channels' property to support differential channels. Differential channels are defined as a pair of positive and negative inputs: vinp & vinn. Signed-off-by: Fabrice Gasnier Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/st,stm32-adc.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt index 48bfcaa3ffcd..e8bb8243e92c 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt @@ -62,6 +62,15 @@ Required properties: - st,adc-channels: List of single-ended channels muxed for this ADC. It can have up to 16 channels on stm32f4 or 20 channels on stm32h7, numbered from 0 to 15 or 19 (resp. for in0..in15 or in0..in19). +- st,adc-diff-channels: List of differential channels muxed for this ADC. + Depending on part used, some channels can be configured as differential + instead of single-ended (e.g. stm32h7). List here positive and negative + inputs pairs as , ,... vinp and vinn are numbered + from 0 to 19 on stm32h7) + Note: At least one of "st,adc-channels" or "st,adc-diff-channels" is required. + Both properties can be used together. Some channels can be used as + single-ended and some other ones as differential (mixed). But channels + can't be configured both as single-ended and differential (invalid). - #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in Documentation/devicetree/bindings/iio/iio-bindings.txt @@ -111,3 +120,18 @@ Example: ... other adc child nodes follow... }; + +Example to setup: +- channel 1 as single-ended +- channels 2 & 3 as differential (with resp. 6 & 7 negative inputs) + + adc: adc@40022000 { + compatible = "st,stm32h7-adc-core"; + ... + adc1: adc@0 { + compatible = "st,stm32h7-adc"; + ... + st,adc-channels = <1>; + st,adc-diff-channels = <2 6>, <3 7>; + }; + }; -- cgit v1.2.3 From 02c5dff52b3e1eb38513699e17cdf973a5a40322 Mon Sep 17 00:00:00 2001 From: Peter Meerwald-Stadler Date: Fri, 27 Oct 2017 21:45:43 +0200 Subject: dt-bindings: iio: health: Add MAX30105 support to max30102.txt Signed-off-by: Peter Meerwald-Stadler Acked-by: Matt Ranostay Cc: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/health/max30102.txt | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/health/max30102.txt b/Documentation/devicetree/bindings/iio/health/max30102.txt index 8629c18b0e78..ef2ca0a0306f 100644 --- a/Documentation/devicetree/bindings/iio/health/max30102.txt +++ b/Documentation/devicetree/bindings/iio/health/max30102.txt @@ -1,9 +1,11 @@ Maxim MAX30102 heart rate and pulse oximeter sensor +Maxim MAX30105 optical particle-sensing module * https://datasheets.maximintegrated.com/en/ds/MAX30102.pdf +* https://datasheets.maximintegrated.com/en/ds/MAX30105.pdf Required properties: - - compatible: must be "maxim,max30102" + - compatible: must be "maxim,max30102" or "maxim,max30105" - reg: the I2C address of the sensor - interrupt-parent: should be the phandle for the interrupt controller - interrupts: the sole interrupt generated by the device @@ -12,8 +14,10 @@ Required properties: interrupt client node bindings. Optional properties: - - maxim,red-led-current-microamp: configuration for RED LED current + - maxim,red-led-current-microamp: configuration for red LED current - maxim,ir-led-current-microamp: configuration for IR LED current + - maxim,green-led-current-microamp: configuration for green LED current + (max30105 only) Note that each step is approximately 200 microamps, ranging from 0 uA to 50800 uA. -- cgit v1.2.3 From edf7550a1f93a88be2bf743b5d352b278d1b789c Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Tue, 31 Oct 2017 12:42:03 +1030 Subject: iio: adc: aspeed: Deassert reset in probe The ASPEED SoC must deassert a reset in order to use the ADC peripheral. The device tree bindings are updated to document the resets phandle, and the example is updated to match what is expected for both the reset and clock phandle. Note that the bindings should have always had the reset controller, as the hardware is unusable without it. Signed-off-by: Joel Stanley Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/aspeed_adc.txt | 4 +++- drivers/iio/adc/aspeed_adc.c | 25 ++++++++++++++++------ 2 files changed, 22 insertions(+), 7 deletions(-) (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt index 674e133b7cd7..034fc2ba100e 100644 --- a/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt @@ -8,6 +8,7 @@ Required properties: - reg: memory window mapping address and length - clocks: Input clock used to derive the sample clock. Expected to be the SoC's APB clock. +- resets: Reset controller phandle - #io-channel-cells: Must be set to <1> to indicate channels are selected by index. @@ -15,6 +16,7 @@ Example: adc@1e6e9000 { compatible = "aspeed,ast2400-adc"; reg = <0x1e6e9000 0xb0>; - clocks = <&clk_apb>; + clocks = <&syscon ASPEED_CLK_APB>; + resets = <&syscon ASPEED_RESET_ADC>; #io-channel-cells = <1>; }; diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 8a958d5f1905..327a49ba1991 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -53,11 +54,12 @@ struct aspeed_adc_model_data { }; struct aspeed_adc_data { - struct device *dev; - void __iomem *base; - spinlock_t clk_lock; - struct clk_hw *clk_prescaler; - struct clk_hw *clk_scaler; + struct device *dev; + void __iomem *base; + spinlock_t clk_lock; + struct clk_hw *clk_prescaler; + struct clk_hw *clk_scaler; + struct reset_control *rst; }; #define ASPEED_CHAN(_idx, _data_reg_addr) { \ @@ -217,6 +219,15 @@ static int aspeed_adc_probe(struct platform_device *pdev) goto scaler_error; } + data->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(data->rst)) { + dev_err(&pdev->dev, + "invalid or missing reset controller device tree entry"); + ret = PTR_ERR(data->rst); + goto reset_error; + } + reset_control_deassert(data->rst); + model_data = of_device_get_match_data(&pdev->dev); if (model_data->wait_init_sequence) { @@ -263,9 +274,10 @@ iio_register_error: writel(ASPEED_OPERATION_MODE_POWER_DOWN, data->base + ASPEED_REG_ENGINE_CONTROL); clk_disable_unprepare(data->clk_scaler->clk); +reset_error: + reset_control_assert(data->rst); clk_enable_error: clk_hw_unregister_divider(data->clk_scaler); - scaler_error: clk_hw_unregister_divider(data->clk_prescaler); return ret; @@ -280,6 +292,7 @@ static int aspeed_adc_remove(struct platform_device *pdev) writel(ASPEED_OPERATION_MODE_POWER_DOWN, data->base + ASPEED_REG_ENGINE_CONTROL); clk_disable_unprepare(data->clk_scaler->clk); + reset_control_assert(data->rst); clk_hw_unregister_divider(data->clk_scaler); clk_hw_unregister_divider(data->clk_prescaler); -- cgit v1.2.3 From eed48a3beba0b1da725c77288091bfa6395d232d Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Thu, 23 Nov 2017 23:59:06 +0100 Subject: dt-bindings: iio: light: add UVIS25 device bindings Acked-by: Rob Herring Signed-off-by: Lorenzo Bianconi Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/light/uvis25.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/light/uvis25.txt (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/light/uvis25.txt b/Documentation/devicetree/bindings/iio/light/uvis25.txt new file mode 100644 index 000000000000..3041207e3f3c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/uvis25.txt @@ -0,0 +1,23 @@ +* ST UVIS25 uv sensor + +Required properties: +- compatible: should be "st,uvis25" +- reg: i2c address of the sensor / spi cs line + +Optional properties: +- interrupt-parent: should be the phandle for the interrupt controller +- interrupts: interrupt mapping for IRQ. It should be configured with + flags IRQ_TYPE_LEVEL_HIGH, IRQ_TYPE_EDGE_RISING, IRQ_TYPE_LEVEL_LOW or + IRQ_TYPE_EDGE_FALLING. + + Refer to interrupt-controller/interrupts.txt for generic interrupt + client node bindings. + +Example: + +uvis25@47 { + compatible = "st,uvis25"; + reg = <0x47>; + interrupt-parent = <&gpio0>; + interrupts = <0 IRQ_TYPE_EDGE_RISING>; +}; -- cgit v1.2.3 From 461774659add8b73d558c69d532a1a6ff32d627e Mon Sep 17 00:00:00 2001 From: Xingyu Chen Date: Tue, 7 Nov 2017 22:10:20 +0800 Subject: dt-bindings: iio: adc: update the doc for SAR ADC Update the doc as the SAR ADC modules doesn't require "sana" clock. Singed-off-by: Xingyu Chen Signed-off-by: Yixun Lan Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt | 1 - 1 file changed, 1 deletion(-) (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt index f413e82c8b83..1e6ee3deb4fa 100644 --- a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt +++ b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt @@ -15,7 +15,6 @@ Required properties: - "clkin" for the reference clock (typically XTAL) - "core" for the SAR ADC core clock optional clocks: - - "sana" for the analog clock - "adc_clk" for the ADC (sampling) clock - "adc_sel" for the ADC (sampling) clock mux - vref-supply: the regulator supply for the ADC reference voltage -- cgit v1.2.3