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powerpc/44x: Support OCM(On Chip Memory) for APM821xx SoC and Bluestone board

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This patch consists of:
- Add driver for OCM component
- Export OCM Information at /sys/kernel/debug/ppc4xx_ocm/info

Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com>
Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Vinh Nguyen Huu Tuong
2012-07-02 22:52:30 +00:00
committed by Benjamin Herrenschmidt
parent 0388c79c99
commit c19d824862
5 changed files with 477 additions and 0 deletions
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8
arch/powerpc/boot/dts/bluestone.dts
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@@ -107,6 +107,14 @@
interrupt-parent = <&UIC0>;
};
OCM: ocm@400040000 {
compatible = "ibm,ocm";
status = "ok";
cell-index = <1>;
/* configured in U-Boot */
reg = <4 0x00040000 0x8000>; /* 32K */
};
SDR0: sdr {
compatible = "ibm,sdr-apm821xx";
dcr-reg = <0x00e 0x002>;