The u8540 platform DMA settings are not currently supported. In this
patch we ensure they are not passed to the serial driver during boot.
This allows us to reach a terminal when booting with Device Tree
enabled.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
arch/arm/mach-ux500/cpu-db8500.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index 19235cf..da425f7 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -257,9 +257,6 @@ static struct of_dev_auxdata u8500_auxdata_lookup[]
__initdata = {
/* Requires call-back bindings. */
OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
/* Requires DMA bindings. */
- OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
- OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
- OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat),
OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", &mop500_sdi0_data),
OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", &mop500_sdi1_data),
@@ -297,6 +294,22 @@ static struct of_dev_auxdata u8500_auxdata_lookup[]
__initdata = {
{},
};
+static struct of_dev_auxdata u8500_auxdata_uart_lookup[] __initdata = {
+ /* Requires DMA bindings. */
+ OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
+ OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
+ OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
+ {},
+};
+
+static struct of_dev_auxdata u8540_auxdata_uart_lookup[] __initdata = {
+ /* Requires DMA bindings. */
+ OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", NULL),
+ OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", NULL),
+ OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", NULL),
+ {},
+};
+
static const struct of_device_id u8500_local_bus_nodes[] = {
/* only create devices below soc node */
{ .compatible = "stericsson,db8500", },
@@ -324,6 +337,13 @@ static void __init u8500_init_machine(void)
/* automatically probe child nodes of db8500 device */
of_platform_populate(NULL, u8500_local_bus_nodes, u8500_auxdata_lookup,
parent);
+
+ if (of_machine_is_compatible("st-ericsson,u8540"))
+ of_platform_populate(NULL, u8500_local_bus_nodes,
+ u8540_auxdata_uart_lookup, parent);
+ else
+ of_platform_populate(NULL, u8500_local_bus_nodes,
+ u8500_auxdata_uart_lookup, parent);
}
static const char * stericsson_dt_platform_compat[] = {
--
1.7.10.4
--
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