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-rw-r--r--arch/arm/mach-imx/mm-imx5.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mm-imx5.c b/arch/arm/mach-imx/mm-imx5.c
index f92caf1b30ba..79d71cf23a1d 100644
--- a/arch/arm/mach-imx/mm-imx5.c
+++ b/arch/arm/mach-imx/mm-imx5.c
@@ -81,8 +81,28 @@ void __init imx50_init_early(void)
mxc_arch_reset_init(MX50_IO_ADDRESS(MX50_WDOG_BASE_ADDR));
}
+/*
+ * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
+ * the Freescale marketing division. However this did not remove the
+ * hardware from the chip which still needs to be configured for proper
+ * IPU support.
+ */
+static void __init imx51_ipu_mipi_setup(void)
+{
+ void __iomem *hsc_addr;
+ hsc_addr = MX51_IO_ADDRESS(MX51_MIPI_HSC_BASE_ADDR);
+
+ /* setup MIPI module to legacy mode */
+ __raw_writel(0xf00, hsc_addr);
+
+ /* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
+ __raw_writel(__raw_readl(hsc_addr + 0x800) | 0x30ff,
+ hsc_addr + 0x800);
+}
+
void __init imx51_init_early(void)
{
+ imx51_ipu_mipi_setup();
mxc_set_cpu_type(MXC_CPU_MX51);
mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR));