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[POWERPC] 85xx: Enable DMA engine on the MPC8544 DS

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Add the device tree node for the DMA engine on 8544, publish
the device and enable the driver in the defconfig.

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Sebastian Siewior 2008-03-15 00:01:30 +01:00 • committed by Kumar Gala
parent 370131c3f2
commit 1028d4f162
3 changed files with 70 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

41
arch/powerpc/boot/dts/mpc8544ds.dts
View file

@ -116,6 +116,47 @@
}; };
}; };
dma@21300 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "fsl,mpc8544-dma", "fsl,eloplus-dma";
reg = <21300 4>;
ranges = <0 21100 200>;
cell-index = <0>;
dma-channel@0 {
compatible = "fsl,mpc8544-dma-channel",
"fsl,eloplus-dma-channel";
reg = <0 80>;
cell-index = <0>;
interrupt-parent = <&mpic>;
interrupts = <14 2>;
};
dma-channel@80 {
compatible = "fsl,mpc8544-dma-channel",
"fsl,eloplus-dma-channel";
reg = <80 80>;
cell-index = <1>;
interrupt-parent = <&mpic>;
interrupts = <15 2>;
};
dma-channel@100 {
compatible = "fsl,mpc8544-dma-channel",
"fsl,eloplus-dma-channel";
reg = <100 80>;
cell-index = <2>;
interrupt-parent = <&mpic>;
interrupts = <16 2>;
};
dma-channel@180 {
compatible = "fsl,mpc8544-dma-channel",
"fsl,eloplus-dma-channel";
reg = <180 80>;
cell-index = <3>;
interrupt-parent = <&mpic>;
interrupts = <17 2>;
};
};
enet0: ethernet@24000 { enet0: ethernet@24000 {
cell-index = <0>; cell-index = <0>;
device_type = "network"; device_type = "network";

17
arch/powerpc/configs/85xx/mpc8544_ds_defconfig
View file

@ -162,6 +162,7 @@ CONFIG_MPC85xx=y
# CONFIG_MPC85xx_CDS is not set # CONFIG_MPC85xx_CDS is not set
# CONFIG_MPC85xx_MDS is not set # CONFIG_MPC85xx_MDS is not set
CONFIG_MPC85xx_DS=y CONFIG_MPC85xx_DS=y
# CONFIG_KSI8560 is not set
# CONFIG_STX_GP3 is not set # CONFIG_STX_GP3 is not set
# CONFIG_TQM8540 is not set # CONFIG_TQM8540 is not set
# CONFIG_TQM8541 is not set # CONFIG_TQM8541 is not set
@ -202,6 +203,7 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT is not set # CONFIG_PREEMPT is not set
CONFIG_BINFMT_ELF=y CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m CONFIG_BINFMT_MISC=m
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_MATH_EMULATION=y CONFIG_MATH_EMULATION=y
# CONFIG_IOMMU_HELPER is not set # CONFIG_IOMMU_HELPER is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
@ -1255,7 +1257,19 @@ CONFIG_RTC_DRV_CMOS=y
# #
# on-CPU RTC drivers # on-CPU RTC drivers
# #
# CONFIG_DMADEVICES is not set CONFIG_DMADEVICES=y
#
# DMA Devices
#
CONFIG_FSL_DMA=y
# CONFIG_FSL_DMA_SELFTEST is not set
CONFIG_DMA_ENGINE=y
#
# DMA Clients
#
# CONFIG_NET_DMA is not set
# #
# Userspace I/O # Userspace I/O
@ -1447,6 +1461,7 @@ CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y CONFIG_HAS_DMA=y
CONFIG_HAVE_LMB=y
# #
# Kernel hacking # Kernel hacking

13
arch/powerpc/platforms/85xx/mpc85xx_ds.c
View file

@ -19,6 +19,7 @@
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/of_platform.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/time.h> #include <asm/time.h>
@ -183,6 +184,18 @@ static int __init mpc8544_ds_probe(void)
} }
} }
static struct of_device_id mpc85xxds_ids[] = {
{ .type = "soc", },
{ .compatible = "soc", },
{},
};
static int __init mpc85xxds_publish_devices(void)
{
return of_platform_bus_probe(NULL, mpc85xxds_ids, NULL);
}
machine_device_initcall(mpc8544_ds, mpc85xxds_publish_devices);
/* /*
* Called very early, device-tree isn't unflattened * Called very early, device-tree isn't unflattened
*/ */