X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Fspeed.c;h=adf09efa2795aa4f0934ddf4d0439938c07a46b1;hb=1cad23c5f471d695bed1e3907e30caee3c2a3056;hp=7c7467f7bfcb7e8cdff98bbf1c69e56ed9fd80cd;hpb=c1015c67f4cb01bdd59642c912263cf62e70e8d1;p=oweals%2Fu-boot.git

diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 7c7467f7bf..adf09efa27 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -74,12 +74,33 @@ void get_sys_info(sys_info_t *sys_info)
 	uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
 	unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
 	uint mem_pll_rat;
+#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
+	uint single_src;
+#endif
 
 	sys_info->freq_systembus = sysclk;
+#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
+	/*
+	 * DDR_REFCLK_SEL rcw bit is used to determine if DDR PLLS
+	 * are driven by separate DDR Refclock or single source
+	 * differential clock.
+	 */
+	single_src = (in_be32(&gur->rcwsr[5]) >>
+		      FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_SHIFT) &
+		      FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_MASK;
+	/*
+	 * For single source clocking, both ddrclock and syclock
+	 * are driven by differential sysclock.
+	 */
+	if (single_src == FSL_CORENET2_RCWSR5_DDR_REFCLK_SINGLE_CLK) {
+		printf("Single Source Clock Configuration\n");
+		sys_info->freq_ddrbus = CONFIG_SYS_CLK_FREQ;
+	} else
+#endif
 #ifdef CONFIG_DDR_CLK_FREQ
-	sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
+		sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
 #else
-	sys_info->freq_ddrbus = sysclk;
+		sys_info->freq_ddrbus = sysclk;
 #endif
 
 	sys_info->freq_systembus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f;
@@ -130,7 +151,8 @@ void get_sys_info(sys_info_t *sys_info)
 		sys_info->freq_processor[cpu] =
 			 freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
 	}
-#if defined(CONFIG_PPC_B4860) || defined(CONFIG_PPC_T2080)
+#if defined(CONFIG_PPC_B4860) || defined(CONFIG_PPC_T2080) || \
+	defined(CONFIG_PPC_T2081)
 #define FM1_CLK_SEL	0xe0000000
 #define FM1_CLK_SHIFT	29
 #else