arch: powerpc: update the eLBC IP input clock
eLBC IP clock is always a constant divisor of platform clock
pre-defined per SoC. Clock ratio register (LCRR) used in
current implementation governs eLBC IP output cloc.
Update sys_info->freq_localbus to represent eLBC input clock with
value constant divisor of platform clock.
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index adba092..cb8281e 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -607,32 +607,8 @@
#endif /* CONFIG_FSL_CORENET */
#if defined(CONFIG_FSL_LBC)
- uint lcrr_div;
-#if defined(CONFIG_SYS_LBC_LCRR)
- /* We will program LCRR to this value later */
- lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
-#else
- lcrr_div = in_be32(&(LBC_BASE_ADDR)->lcrr) & LCRR_CLKDIV;
-#endif
- if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
-#if defined(CONFIG_FSL_CORENET)
- /* If this is corenet based SoC, bit-representation
- * for four times the clock divider values.
- */
- lcrr_div *= 4;
-#elif !defined(CONFIG_ARCH_MPC8540) && !defined(CONFIG_ARCH_MPC8541) && \
- !defined(CONFIG_ARCH_MPC8555) && !defined(CONFIG_ARCH_MPC8560)
- /*
- * Yes, the entire PQ38 family use the same
- * bit-representation for twice the clock divider values.
- */
- lcrr_div *= 2;
-#endif
- sys_info->freq_localbus = sys_info->freq_systembus / lcrr_div;
- } else {
- /* In case anyone cares what the unknown value is */
- sys_info->freq_localbus = lcrr_div;
- }
+ sys_info->freq_localbus = sys_info->freq_systembus /
+ CONFIG_SYS_FSL_LBC_CLK_DIV;
#endif
#if defined(CONFIG_FSL_IFC)