[PATCH] [MPC52xx] Use IPB bus frequency for SOC peripherals

The soc node of the mpc52xx needs to be loaded with the IPB bus frequency, not the XLB frequency. This patch depends on the previous patches for MPC52xx device tree support Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

[PATCH] [MPC52xx] Use IPB bus frequency for SOC peripherals
The soc node of the mpc52xx needs to be loaded with the IPB bus frequency, not the XLB frequency. This patch depends on the previous patches for MPC52xx device tree support Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Grant Likely · Stefan Roese
1 parent 1eac2a7141
Showing 1 changed file with 4 additions and 5 deletions Side-by-side Diff
cpu/mpc5xxx/cpu.c
@@ -112,22 +112,21 @@
 ft_cpu_setup(void *blob, bd_t *bd)
 {
 	u32 *p;
-	ulong clock;
 	int len;
  
-	clock = bd->bi_busfreq;
+	/* Core XLB bus frequency */
 	p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
 	if (p != NULL)
-		*p = cpu_to_be32(clock);
+		*p = cpu_to_be32(bd->bi_busfreq);
  
+	/* SOC peripherals use the IPB bus frequency */
 	p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
 	if (p != NULL)
-		*p = cpu_to_be32(clock);
+		*p = cpu_to_be32(bd->bi_ipbfreq);
  
 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@3000/mac-address", &len);
 	if (p != NULL)
 		memcpy(p, bd->bi_enetaddr, 6);
-
 }
 #endif
...	...	@@ -112,22 +112,21 @@
112	112	ft_cpu_setup(void blob, bd_t bd)
113	113	{
114	114	u32 *p;
115		- ulong clock;
116	115	int len;
117	116
118		- clock = bd->bi_busfreq;
	117	+ /* Core XLB bus frequency */
119	118	p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
120	119	if (p != NULL)
121		- *p = cpu_to_be32(clock);
	120	+ *p = cpu_to_be32(bd->bi_busfreq);
122	121
	122	+ /* SOC peripherals use the IPB bus frequency */
123	123	p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
124	124	if (p != NULL)
125		- *p = cpu_to_be32(clock);
	125	+ *p = cpu_to_be32(bd->bi_ipbfreq);
126	126
127	127	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@3000/mac-address", &len);
128	128	if (p != NULL)
129	129	memcpy(p, bd->bi_enetaddr, 6);
130		-
131	130	}
132	131	#endif