diff options
| -rw-r--r-- | Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt | 54 | ||||
| -rw-r--r-- | arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c | 2 | ||||
| -rw-r--r-- | drivers/of/fdt.c | 7 |
3 files changed, 61 insertions, 2 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt b/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt index 6e37be1eeb2d..4f8930263dd9 100644 --- a/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt +++ b/Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt @@ -21,6 +21,15 @@ Required properties: - fsl,qe-num-snums: define how many serial number(SNUM) the QE can use for the threads. +Optional properties: +- fsl,firmware-phandle: + Usage: required only if there is no fsl,qe-firmware child node + Value type: <phandle> + Definition: Points to a firmware node (see "QE Firmware Node" below) + that contains the firmware that should be uploaded for this QE. + The compatible property for the firmware node should say, + "fsl,qe-firmware". + Recommended properties - brg-frequency : the internal clock source frequency for baud-rate generators in Hz. @@ -59,3 +68,48 @@ Example: reg = <0 c000>; }; }; + +* QE Firmware Node + +This node defines a firmware binary that is embedded in the device tree, for +the purpose of passing the firmware from bootloader to the kernel, or from +the hypervisor to the guest. + +The firmware node itself contains the firmware binary contents, a compatible +property, and any firmware-specific properties. The node should be placed +inside a QE node that needs it. Doing so eliminates the need for a +fsl,firmware-phandle property. Other QE nodes that need the same firmware +should define an fsl,firmware-phandle property that points to the firmware node +in the first QE node. + +The fsl,firmware property can be specified in the DTS (possibly using incbin) +or can be inserted by the boot loader at boot time. + +Required properties: + - compatible + Usage: required + Value type: <string> + Definition: A standard property. Specify a string that indicates what + kind of firmware it is. For QE, this should be "fsl,qe-firmware". + + - fsl,firmware + Usage: required + Value type: <prop-encoded-array>, encoded as an array of bytes + Definition: A standard property. This property contains the firmware + binary "blob". + +Example: + qe1@e0080000 { + compatible = "fsl,qe"; + qe_firmware:qe-firmware { + compatible = "fsl,qe-firmware"; + fsl,firmware = [0x70 0xcd 0x00 0x00 0x01 0x46 0x45 ...]; + }; + ... + }; + + qe2@e0090000 { + compatible = "fsl,qe"; + fsl,firmware-phandle = <&qe_firmware>; + ... + }; diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c index 929d017535a3..d4f8be307cd5 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c @@ -481,6 +481,8 @@ mpc52xx_lpbfifo_probe(struct of_device *op, const struct of_device_id *match) if (rc) goto err_bcom_rx_irq; + lpbfifo.dma_irqs_enabled = 1; + /* Request the Bestcomm transmit (memory --> fifo) task and IRQ */ lpbfifo.bcom_tx_task = bcom_gen_bd_tx_init(2, res.start + LPBFIFO_REG_FIFO_DATA, diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 406757a9d7ea..dee4fb56b094 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -376,8 +376,11 @@ unsigned long __init unflatten_dt_node(unsigned long mem, if (!np->type) np->type = "<NULL>"; } - while (tag == OF_DT_BEGIN_NODE) { - mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize); + while (tag == OF_DT_BEGIN_NODE || tag == OF_DT_NOP) { + if (tag == OF_DT_NOP) + *p += 4; + else + mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize); tag = be32_to_cpup((__be32 *)(*p)); } if (tag != OF_DT_END_NODE) { |