diff mbox

[U-Boot,2/2] mpc85xx/t2080: Fix parsing DDR ratio for new revision

Message ID 1414434693-31812-2-git-send-email-yorksun@freescale.com
State Accepted
Delegated to: York Sun
Headers show

Commit Message

York Sun Oct. 27, 2014, 6:31 p.m. UTC 
T2080 rev 1.1 changes MEM_RAT in RCW, which requires new parsing for ratio,
the same way as T4240 rev 2.0.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Shengzhou Liu <Shengzhou.Liu@freescale.com>
---
 arch/powerpc/cpu/mpc85xx/speed.c |   23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 3236f6a..9d2a3b9 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -37,6 +37,7 @@  void get_sys_info(sys_info_t *sys_info)
 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
 	int cc_group[12] = CONFIG_SYS_FSL_CLUSTER_CLOCKS;
 #endif
+	__maybe_unused u32 svr;
 
 	const u8 core_cplx_PLL[16] = {
 		[ 0] = 0,	/* CC1 PPL / 1 */
@@ -122,11 +123,27 @@  void get_sys_info(sys_info_t *sys_info)
 	/* T4240/T4160 Rev2.0 MEM_PLL_RAT uses a value which is half of
 	 * T4240/T4160 Rev1.0. eg. It's 12 in Rev1.0, however, for Rev2.0
 	 * it uses 6.
+	 * T2080 rev 1.1 and later also use half mem_pll comparing with rev 1.0
 	 */
 #if defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160) || \
-	defined(CONFIG_PPC_T4080)
-	if (SVR_MAJ(get_svr()) >= 2)
-		mem_pll_rat *= 2;
+	defined(CONFIG_PPC_T4080) || defined(CONFIG_PPC_T2080)
+	svr = get_svr();
+	switch (SVR_SOC_VER(svr)) {
+	case SVR_T4240:
+	case SVR_T4160:
+	case SVR_T4120:
+	case SVR_T4080:
+		if (SVR_MAJ(svr) >= 2)
+			mem_pll_rat *= 2;
+		break;
+	case SVR_T2080:
+	case SVR_T2081:
+		if ((SVR_MAJ(svr) > 1) || (SVR_MIN(svr) >= 1))
+			mem_pll_rat *= 2;
+		break;
+	default:
+		break;
+	}
 #endif
 	if (mem_pll_rat > 2)
 		sys_info->freq_ddrbus *= mem_pll_rat;