Re: [U-Boot] [PATCH 1/2] fdt: introduce fdt_create_phandle()

On May 10, 2011, at 3:14 PM, Timur Tabi wrote:

The ePAPR specification says that phandle properties should be called "phandle", and not "linux,phandle". To facilitate the migration from "linux,phandle" to "phandle", introduce function fdt_create_phandle(), which creates a phandle in a given node. For now, we create both the "phandle" and "linux,phandle" properties. A later version of this function will remove support for "linux,phandle".

Signed-off-by: Timur Tabi timur@freescale.com

common/fdt_support.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/fdt_support.h | 1 + 2 files changed, 41 insertions(+), 0 deletions(-)

Jerry,

Any comments on this?

- k

diff --git a/common/fdt_support.c b/common/fdt_support.c index 85715ff..dd9deaf 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -1201,6 +1201,46 @@ int fdt_alloc_phandle(void *blob) return phandle + 1; }

+/*

• • fdt_create_phandle: Create a phandle property for the given node
• • @fdt: ptr to device tree
• • @nodeoffset: node to update
• • @phandle: phandle value to set (must be unique)

+*/ +int fdt_create_phandle(void *fdt, int nodeoffset, uint32_t phandle) +{

• int ret;

+#ifdef DEBUG

• int off = fdt_node_offset_by_phandle(fdt, phandle);
• if ((off >= 0) && (off != nodeoffset)) {

• char buf[64];
  

• fdt_get_path(fdt, nodeoffset, buf, sizeof(buf));
  

• printf("Trying to update node %s with phandle %u ",
  

•        buf, phandle);
  

• fdt_get_path(fdt, off, buf, sizeof(buf));
  

• printf("that already exists in node %s.\n", buf);
  

• return -FDT_ERR_BADPHANDLE;
  

• }

+#endif

• ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle);
• if (ret < 0)

• return ret;
  

• /*

• * For now, also set the deprecated "linux,phandle" property, so that we
  

• * don't break older kernels.
  

• */
  

• ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle);
• return ret;

+}

#if defined(CONFIG_VIDEO) int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) { diff --git a/include/fdt_support.h b/include/fdt_support.h index ce6817b..366062f 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -88,6 +88,7 @@ u64 fdt_translate_address(void *blob, int node_offset, const u32 *in_addr); int fdt_node_offset_by_compat_reg(void *blob, const char *compat, phys_addr_t compat_off); int fdt_alloc_phandle(void *blob); +int fdt_create_phandle(void *fdt, int nodeoffset, uint32_t phandle); int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);

#endif /* ifdef CONFIG_OF_LIBFDT */

1.7.3.4

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