Merge branch 'master' of git://www.denx.de/git/u-boot-imx

5 files changed, 83 insertions, 0 deletions

diff --git a/arch/arm/cpu/arm1136/mx31/Makefile b/arch/arm/cpu/arm1136/mx31/Makefile
index 9670ed9..dcbd570 100644
--- a/arch/arm/cpu/arm1136/mx31/Makefile
+++ b/arch/arm/cpu/arm1136/mx31/Makefile
@@ -8,3 +8,7 @@
 obj-y	+= generic.o
 obj-y	+= timer.o
 obj-y	+= devices.o
+
+ifndef CONFIG_SPL_BUILD
+obj-y  += relocate.o
+endif
diff --git a/arch/arm/cpu/arm1136/mx31/relocate.S b/arch/arm/cpu/arm1136/mx31/relocate.S
new file mode 100644
index 0000000..1c556df
--- /dev/null
+++ b/arch/arm/cpu/arm1136/mx31/relocate.S
@@ -0,0 +1,23 @@
+/*
+ *  relocate - i.MX31-specific vector relocation
+ *
+ *  Copyright (c) 2013  Albert ARIBAUD <albert.u.boot@aribaud.net>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/linkage.h>
+
+/*
+ * The i.MX31 SoC is very specific with respect to exceptions: it
+ * does not provide RAM at the high vectors address (0xFFFF0000),
+ * thus only the low address (0x00000000) is useable; but that is
+ * in ROM, so let's avoid relocating the vectors.
+ */
+	.section	.text.relocate_vectors,"ax",%progbits
+
+ENTRY(relocate_vectors)
+
+	bx	lr
+
+ENDPROC(relocate_vectors)
diff --git a/arch/arm/cpu/arm1136/mx35/Makefile b/arch/arm/cpu/arm1136/mx35/Makefile
index c533215..796db9c 100644
--- a/arch/arm/cpu/arm1136/mx35/Makefile
+++ b/arch/arm/cpu/arm1136/mx35/Makefile
@@ -10,3 +10,7 @@
 obj-y	+= generic.o
 obj-y	+= timer.o
 obj-y	+= mx35_sdram.o
+
+ifndef CONFIG_SPL_BUILD
+obj-y  += relocate.o
+endif
diff --git a/arch/arm/cpu/arm1136/mx35/relocate.S b/arch/arm/cpu/arm1136/mx35/relocate.S
new file mode 100644
index 0000000..43003f8
--- /dev/null
+++ b/arch/arm/cpu/arm1136/mx35/relocate.S
@@ -0,0 +1,23 @@
+/*
+ *  relocate - i.MX35-specific vector relocation
+ *
+ *  Copyright (c) 2013  Albert ARIBAUD <albert.u.boot@aribaud.net>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/linkage.h>
+
+/*
+ * The i.MX35 SoC is very specific with respect to exceptions: it
+ * does not provide RAM at the high vectors address (0xFFFF0000),
+ * thus only the low address (0x00000000) is useable; but that is
+ * in ROM, so let's avoid relocating the vectors.
+ */
+	.section	.text.relocate_vectors,"ax",%progbits
+
+ENTRY(relocate_vectors)
+
+	bx	lr
+
+ENDPROC(relocate_vectors)
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index e599a12..ef02972 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -230,6 +230,11 @@ static void imx_set_wdog_powerdown(bool enable)
 	struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
 	struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
 
+#ifdef CONFIG_MX6SX
+	struct wdog_regs *wdog3 = (struct wdog_regs *)WDOG3_BASE_ADDR;
+	writew(enable, &wdog3->wmcr);
+#endif
+
 	/* Write to the PDE (Power Down Enable) bit */
 	writew(enable, &wdog1->wmcr);
 	writew(enable, &wdog2->wmcr);
@@ -255,6 +260,23 @@ static void clear_mmdc_ch_mask(void)
 	writel(0, &mxc_ccm->ccdr);
 }
 
+static void init_bandgap(void)
+{
+	struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+	/*
+	 * Ensure the bandgap has stabilized.
+	 */
+	while (!(readl(&anatop->ana_misc0) & 0x80))
+		;
+	/*
+	 * For best noise performance of the analog blocks using the
+	 * outputs of the bandgap, the reftop_selfbiasoff bit should
+	 * be set.
+	 */
+	writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_set);
+}
+
+
 #ifdef CONFIG_MX6SL
 static void set_preclk_from_osc(void)
 {
@@ -275,6 +297,13 @@ int arch_cpu_init(void)
 	clear_mmdc_ch_mask();
 
 	/*
+	 * Disable self-bias circuit in the analog bandap.
+	 * The self-bias circuit is used by the bandgap during startup.
+	 * This bit should be set after the bandgap has initialized.
+	 */
+	init_bandgap();
+
+	/*
 	 * When low freq boot is enabled, ROM will not set AHB
 	 * freq, so we need to ensure AHB freq is 132MHz in such
 	 * scenario.