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Commit f88536f1 authored by Bjorn Andersson's avatar Bjorn Andersson
Browse files

Merge branch 'topic/st_fdma' of...

Merge branch 'topic/st_fdma' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma into rproc-next
parents b9e718e9 6d066389
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* STMicroelectronics Flexible Direct Memory Access Device Tree bindings

The FDMA is a general-purpose direct memory access controller capable of
supporting 16 independent DMA channels. It accepts up to 32 DMA requests.
The FDMA is based on a Slim processor which requires a firmware.

* FDMA Controller

Required properties:
- compatible	: Should be one of
		 - st,stih407-fdma-mpe31-11, "st,slim-rproc";
		 - st,stih407-fdma-mpe31-12, "st,slim-rproc";
		 - st,stih407-fdma-mpe31-13, "st,slim-rproc";
- reg		: Should contain an entry for each name in reg-names
- reg-names	: Must contain "slimcore", "dmem", "peripherals", "imem" entries
- interrupts	: Should contain one interrupt shared by all channels
- dma-channels	: Number of channels supported by the controller
- #dma-cells	: Must be <3>. See DMA client section below
- clocks	: Must contain an entry for each clock
See: Documentation/devicetree/bindings/clock/clock-bindings.txt


Example:

	fdma0: dma-controller@8e20000 {
		compatible = "st,stih407-fdma-mpe31-11", "st,slim-rproc";
		reg = <0x8e20000 0x8000>,
		      <0x8e30000 0x3000>,
		      <0x8e37000 0x1000>,
		      <0x8e38000 0x8000>;
		reg-names = "slimcore", "dmem", "peripherals", "imem";
		clocks = <&clk_s_c0_flexgen CLK_FDMA>,
			 <&clk_s_c0_flexgen CLK_EXT2F_A9>,
			 <&clk_s_c0_flexgen CLK_EXT2F_A9>,
			 <&clk_s_c0_flexgen CLK_EXT2F_A9>;
		interrupts = <GIC_SPI 5 IRQ_TYPE_NONE>;
		dma-channels = <16>;
		#dma-cells = <3>;
	};

* DMA client

Required properties:
- dmas: Comma separated list of dma channel requests
- dma-names: Names of the aforementioned requested channels

Each dmas request consists of 4 cells:
1. A phandle pointing to the FDMA controller
2. The request line number
3. A 32bit mask specifying (see include/linux/platform_data/dma-st-fdma.h)
 -bit 2-0: Holdoff value, dreq will be masked for
	0x0: 0-0.5us
	0x1: 0.5-1us
	0x2: 1-1.5us
 -bit 17: data swap
	0x0: disabled
	0x1: enabled
 -bit 21: Increment Address
	0x0: no address increment between transfers
	0x1: increment address between transfers
 -bit 22: 2 STBus Initiator Coprocessor interface
	0x0: high priority port
	0x1: low priority port
4. transfers type
 0 free running
 1 paced

Example:

	sti_uni_player2: sti-uni-player@2 {
		compatible = "st,sti-uni-player";
		status = "disabled";
		#sound-dai-cells = <0>;
		st,syscfg = <&syscfg_core>;
		clocks = <&clk_s_d0_flexgen CLK_PCM_2>;
		assigned-clocks = <&clk_s_d0_flexgen CLK_PCM_2>;
		assigned-clock-parents = <&clk_s_d0_quadfs 2>;
		assigned-clock-rates = <50000000>;
		reg = <0x8D82000 0x158>;
		interrupts = <GIC_SPI 86 IRQ_TYPE_NONE>;
		dmas = <&fdma0 4 0 1>;
		dai-name = "Uni Player #1 (DAC)";
		dma-names = "tx";
		st,uniperiph-id = <2>;
		st,version = <5>;
		st,mode = "PCM";
	};
+3 −0
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@@ -1774,6 +1774,7 @@ F: drivers/char/hw_random/st-rng.c
F:	drivers/clocksource/arm_global_timer.c
F:	drivers/clocksource/clksrc_st_lpc.c
F:	drivers/cpufreq/sti-cpufreq.c
F:	drivers/dma/st_fdma*
F:	drivers/i2c/busses/i2c-st.c
F:	drivers/media/rc/st_rc.c
F:	drivers/media/platform/sti/c8sectpfe/
@@ -1784,6 +1785,7 @@ F: drivers/phy/phy-stih407-usb.c
F:	drivers/phy/phy-stih41x-usb.c
F:	drivers/pinctrl/pinctrl-st.c
F:	drivers/remoteproc/st_remoteproc.c
F:	drivers/remoteproc/st_slim_rproc.c
F:	drivers/reset/sti/
F:	drivers/rtc/rtc-st-lpc.c
F:	drivers/tty/serial/st-asc.c
@@ -1792,6 +1794,7 @@ F: drivers/usb/host/ehci-st.c
F:	drivers/usb/host/ohci-st.c
F:	drivers/watchdog/st_lpc_wdt.c
F:	drivers/ata/ahci_st.c
F:	include/linux/remoteproc/st_slim_rproc.h

ARM/STM32 ARCHITECTURE
M:	Maxime Coquelin <mcoquelin.stm32@gmail.com>
+6 −0
Original line number Diff line number Diff line
@@ -649,6 +649,9 @@ CONFIG_SND_SOC_AK4642=m
CONFIG_SND_SOC_SGTL5000=m
CONFIG_SND_SOC_SPDIF=m
CONFIG_SND_SOC_WM8978=m
CONFIG_SND_SOC_STI=m
CONFIG_SND_SOC_STI_SAS=m
CONFIG_SND_SIMPLE_CARD=m
CONFIG_USB=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_MVEBU=y
@@ -790,6 +793,7 @@ CONFIG_DMA_OMAP=y
CONFIG_QCOM_BAM_DMA=y
CONFIG_XILINX_DMA=y
CONFIG_DMA_SUN6I=y
CONFIG_ST_FDMA=m
CONFIG_STAGING=y
CONFIG_SENSORS_ISL29018=y
CONFIG_SENSORS_ISL29028=y
@@ -823,6 +827,8 @@ CONFIG_HWSPINLOCK_QCOM=y
CONFIG_ROCKCHIP_IOMMU=y
CONFIG_TEGRA_IOMMU_GART=y
CONFIG_TEGRA_IOMMU_SMMU=y
CONFIG_REMOTEPROC=m
CONFIG_ST_REMOTEPROC=m
CONFIG_PM_DEVFREQ=y
CONFIG_ARM_TEGRA_DEVFREQ=m
CONFIG_MEMORY=y
+13 −0
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@@ -435,6 +435,19 @@ config STE_DMA40
	help
	  Support for ST-Ericsson DMA40 controller

config ST_FDMA
	tristate "ST FDMA dmaengine support"
	depends on ARCH_STI
	select ST_SLIM_REMOTEPROC
	select DMA_ENGINE
	select DMA_VIRTUAL_CHANNELS
	help
	  Enable support for ST FDMA controller.
	  It supports 16 independent DMA channels, accepts up to 32 DMA requests

	  Say Y here if you have such a chipset.
	  If unsure, say N.

config STM32_DMA
	bool "STMicroelectronics STM32 DMA support"
	depends on ARCH_STM32 || COMPILE_TEST
+1 −0
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@@ -67,6 +67,7 @@ obj-$(CONFIG_TI_DMA_CROSSBAR) += ti-dma-crossbar.o
obj-$(CONFIG_TI_EDMA) += edma.o
obj-$(CONFIG_XGENE_DMA) += xgene-dma.o
obj-$(CONFIG_ZX_DMA) += zx296702_dma.o
obj-$(CONFIG_ST_FDMA) += st_fdma.o

obj-y += qcom/
obj-y += xilinx/
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