diff options
Diffstat (limited to 'recipes/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt')
| -rw-r--r-- | recipes/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/recipes/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt b/recipes/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt new file mode 100644 index 0000000000..eddebfe2e7 --- /dev/null +++ b/recipes/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt @@ -0,0 +1,110 @@ +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 + |