Add a Device Tree node for the DMA0 controller on sh73a0 and auxdata to supply platform data to the driver. To enable the DMA0 controller it also has to be taken out of reset.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+rene...@gmail.com> --- arch/arm/boot/dts/sh73a0.dtsi | 36 +++++++++++++++++++++++++++++++++ arch/arm/mach-shmobile/setup-sh73a0.c | 4 +++ 2 files changed, 40 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index ec40bf7..edcf4f7 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -119,6 +119,42 @@ 0 32 0x4>; }; + dma0: shdma@fe000020 { + compatible = "renesas,shdma"; + reg = <0xfe000020 0x89e0>; + interrupt-parent = <&gic>; + interrupts = <0 129 4 + 0 109 4 + 0 110 4 + 0 111 4 + 0 112 4 + 0 113 4 + 0 114 4 + 0 115 4 + 0 116 4 + 0 117 4 + 0 118 4 + 0 119 4 + 0 120 4 + 0 121 4 + 0 122 4 + 0 123 4 + 0 124 4 + 0 125 4 + 0 126 4 + 0 127 4 + 0 128 4>; + interrupt-names = "error", + "ch0", "ch1", "ch2", "ch3", + "ch4", "ch5", "ch6", "ch7", + "ch8", "ch9", "ch10", "ch11", + "ch12", "ch13", "ch14", "ch15", + "ch16", "ch17", "ch18", "ch19"; + #dma-cells = <1>; + dma-channels = <20>; + dma-requests = <256>; + }; + i2c0: i2c@0xe6820000 { #address-cells = <1>; #size-cells = <0>; diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c index b8aa795..980dcf3 100644 --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -998,6 +998,7 @@ void __init sh73a0_init_delay(void) } static const struct of_dev_auxdata sh73a0_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("renesas,shdma", 0xfe000020, "sh-dma-engine.0", &sh73a0_dmae_platform_data), {}, }; @@ -1005,6 +1006,9 @@ void __init sh73a0_add_standard_devices_dt(void) { struct platform_device_info devinfo = { .name = "cpufreq-cpu0", .id = -1, }; + /* Clear software reset bit on SY-DMAC module */ + __raw_writel(__raw_readl(SRCR2) & ~(1 << 18), SRCR2); + platform_add_devices(sh73a0_devices_dt, ARRAY_SIZE(sh73a0_devices_dt)); of_platform_populate(NULL, of_default_bus_match_table, -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/