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From 7fa32df37b889fd0520b28870153b711c65192d2 Mon Sep 17 00:00:00 2001
From: Sylvain Munaut <tnt@246tNt.com>
Date: Sat, 23 Dec 2006 20:25:18 +0100
Subject: [PATCH] [PATCH] powerpc: Add device tree fixups for the EFIKA
We make the efika device tree compliant with the defined bindings
(at least compliant enough). This is mostly done by mangling
the device_type and compatible properties, but also adding
some missing bits.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
---
arch/powerpc/kernel/prom_init.c | 76 +++++++++++++++++++++++++++++++++++++++
1 files changed, 76 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 520ef42..5291d62 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2117,11 +2117,87 @@ static void __init fixup_device_tree_pmac(void)
#define fixup_device_tree_pmac()
#endif
+#ifdef CONFIG_PPC_EFIKA
+/* The current fw of the Efika has a device tree needs quite a few
+ * fixups to be compliant with the mpc52xx bindings. It's currently
+ * unknown if it will ever be compliant (come on bPlan ...) so we do fixups.
+ * NOTE that we (barely) tolerate it because the EFIKA was out before
+ * the bindings were finished, for any new boards -> RTFM ! */
+
+struct subst_entry {
+ char *path;
+ char *property;
+ void *value;
+ int value_len;
+};
+
+static void __init fixup_device_tree_efika(void)
+{
+ /* Substitution table */
+ #define prop_cstr(x) x, sizeof(x)
+ int prop_sound_irq[3] = { 2, 2, 0 };
+ struct subst_entry efika_subst_table[] = {
+ { "/", "device_type", prop_cstr("efika") },
+ { "/builtin", "compatible", prop_cstr("soc") },
+ { "/builtin/ata", "compatible", prop_cstr("mpc5200b-ata\0mpc52xx-ata"), },
+ { "/builtin/bestcomm", "compatible", prop_cstr("mpc5200b-bestcomm\0mpc52xx-bestcomm") },
+ { "/builtin/ethernet", "compatible", prop_cstr("mpc5200b-fec\0mpc52xx-fec") },
+ { "/builtin/pic", "compatible", prop_cstr("mpc5200b-pic\0mpc52xx-pic") },
+ { "/builtin/serial", "compatible", prop_cstr("mpc5200b-psc-uart\0mpc52xx-psc-uart") },
+ { "/builtin/sound", "compatible", prop_cstr("mpc5200b-psc-ac97\0mpc52xx-psc-ac97") },
+ { "/builtin/sound", "interrupts", prop_sound_irq, sizeof(prop_sound_irq) },
+ { "/builtin/sram", "compatible", prop_cstr("mpc5200b-sram\0mpc52xx-sram") },
+ { "/builtin/sram", "device_type", prop_cstr("sram") },
+ {}
+ };
+ #undef prop_cstr
+
+ /* Vars */
+ u32 node;
+ char prop[64];
+ int rv, i;
+
+ /* Check if we're really running on a EFIKA */
+ node = call_prom("finddevice", 1, 1, ADDR("/"));
+ if (!PHANDLE_VALID(node))
+ return;
+
+ rv = prom_getprop(node, "model", prop, sizeof(prop));
+ if (rv == PROM_ERROR)
+ return;
+ if (strcmp(prop, "EFIKA5K2"))
+ return;
+
+ prom_printf("Applying EFIKA device tree fixups\n");
+
+ /* Process substitution table */
+ for (i=0; efika_subst_table[i].path; i++) {
+ struct subst_entry *se = &efika_subst_table[i];
+
+ node = call_prom("finddevice", 1, 1, ADDR(se->path));
+ if (!PHANDLE_VALID(node)) {
+ prom_printf("fixup_device_tree_efika: ",
+ "skipped entry %x - not found\n", i);
+ continue;
+ }
+
+ rv = prom_setprop(node, se->path, se->property,
+ se->value, se->value_len );
+ if (rv == PROM_ERROR)
+ prom_printf("fixup_device_tree_efika: ",
+ "skipped entry %x - setprop error\n", i);
+ }
+}
+#else
+#define fixup_device_tree_efika()
+#endif
+
static void __init fixup_device_tree(void)
{
fixup_device_tree_maple();
fixup_device_tree_chrp();
fixup_device_tree_pmac();
+ fixup_device_tree_efika();
}
static void __init prom_find_boot_cpu(void)
--
1.4.4.2
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