sun6i: dram: Do not try to initialize a second dram chan on A31s

The A31s only has one dram channel, so do not bother with trying to initialize
a second channel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

arch/arm/cpu/armv7/sunxi/Makefile

@@ -10,6 +10,7 @@
 obj-y	+= timer.o
 obj-y	+= board.o
 obj-y	+= clock.o
+obj-y	+= cpu_info.o
 obj-y	+= pinmux.o
 obj-$(CONFIG_MACH_SUN6I)	+= prcm.o
 obj-$(CONFIG_MACH_SUN8I)	+= prcm.o
@@ -21,7 +22,6 @@ obj-$(CONFIG_MACH_SUN7I)	+= clock_sun4i.o
 obj-$(CONFIG_MACH_SUN8I)	+= clock_sun6i.o
 
 ifndef CONFIG_SPL_BUILD
-obj-y	+= cpu_info.o
 ifdef CONFIG_ARMV7_PSCI
 obj-y	+= psci.o
 endif

arch/arm/cpu/armv7/sunxi/dram_sun6i.c

@@ -369,18 +369,26 @@ unsigned long sunxi_dram_init(void)
 		.rows = 16,
 	};
 
+	/* A31s only has one channel */
+	if (sunxi_get_ss_bonding_id() == SUNXI_SS_BOND_ID_A31S)
+		para.chan = 1;
+
 	mctl_sys_init();
 
 	mctl_dll_init(0, &para);
-	mctl_dll_init(1, &para);
+	setbits_le32(&mctl_com->ccr, MCTL_CCR_CH0_CLK_EN);
+
+	if (para.chan == 2) {
+		mctl_dll_init(1, &para);
+		setbits_le32(&mctl_com->ccr, MCTL_CCR_CH1_CLK_EN);
+	}
 
-	setbits_le32(&mctl_com->ccr,
-		     MCTL_CCR_MASTER_CLK_EN |
-		     MCTL_CCR_CH0_CLK_EN |
-		     MCTL_CCR_CH1_CLK_EN);
+	setbits_le32(&mctl_com->ccr, MCTL_CCR_MASTER_CLK_EN);
 
 	mctl_channel_init(0, &para);
-	mctl_channel_init(1, &para);
+	if (para.chan == 2)
+		mctl_channel_init(1, &para);
+
 	mctl_com_init(&para);
 	mctl_port_cfg();