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Commit 88fd2a9d authored by Sylvain Munaut's avatar Sylvain Munaut Committed by Paul Mackerras
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[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: default avatarSylvain Munaut <tnt@246tNt.com>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 05cbbc69

arch/powerpc/kernel/prom_init.c

+81 −0
Original line number Diff line number Diff line
@@ -2117,11 +2117,92 @@ 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 };

	int prop_bcomm_irq[3*16] = { 3,0,0, 3,1,0, 3,2,0, 3,3,0,

	                             3,4,0, 3,5,0, 3,6,0, 3,7,0,

	                             3,8,0, 3,9,0, 3,10,0, 3,11,0,

	                             3,12,0, 3,13,0, 3,14,0, 3,15,0 };

	struct subst_entry efika_subst_table[] = {

		{ "/",			"device_type",	prop_cstr("efika") },

		{ "/builtin",		"compatible",	prop_cstr("soc") },

		{ "/builtin/ata",	"compatible",	prop_cstr("mpc5200b-ata\0mpc5200-ata"), },

		{ "/builtin/bestcomm",	"compatible",	prop_cstr("mpc5200b-bestcomm\0mpc5200-bestcomm") },

		{ "/builtin/bestcomm",	"interrupts",	prop_bcomm_irq, sizeof(prop_bcomm_irq) },

		{ "/builtin/ethernet",	"compatible",	prop_cstr("mpc5200b-fec\0mpc5200-fec") },

		{ "/builtin/pic",	"compatible",	prop_cstr("mpc5200b-pic\0mpc5200-pic") },

		{ "/builtin/serial",	"compatible",	prop_cstr("mpc5200b-psc-uart\0mpc5200-psc-uart") },

		{ "/builtin/sound",	"compatible",	prop_cstr("mpc5200b-psc-ac97\0mpc5200-psc-ac97") },

		{ "/builtin/sound",	"interrupts",	prop_sound_irq, sizeof(prop_sound_irq) },

		{ "/builtin/sram",	"compatible",	prop_cstr("mpc5200b-sram\0mpc5200-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)