renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-18 02:04:05 +08:00
Code

ARM: dts: Add GPMC timings for omap zoom serial port

Browse Source 
The four port serial port on the zoom debug board uses a TL16CP754C
with a single interrupt and GPMC chip select. The serial ports each
use a 8 bytes for IO registers, and are 256 bytes apart on the GPMC
line.

Let's add timings for all four ports so we can remove the GPMC
workarounds for using bootloader timings.

Not caused by this patch, but looks like u-boot only properly
initializes the fifo on the first serial port. Currently the other
ports produce garbage at least with my version of u-boot. I suspect
that TL16CP754C needs non-standard initialization added to 8250
driver to properly fix this issue.

Cc: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2014-10-29 17:16:48 -07:00
parent 1bb3740439
commit b5399ea845
1 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
arch/arm/boot/dts/omap-zoom-common.dtsi
View File

@ -23,6 +23,64 @@
interrupts = <6 IRQ_TYPE_EDGE_RISING>; /* gpio102 */
clock-frequency = <1843200>;
current-speed = <115200>;
gpmc,mux-add-data = <0>;
gpmc,device-width = <1>;
gpmc,wait-pin = <1>;
gpmc,cycle2cycle-samecsen = <1>;
gpmc,cycle2cycle-diffcsen = <1>;
gpmc,cs-on-ns = <5>;
gpmc,cs-rd-off-ns = <155>;
gpmc,cs-wr-off-ns = <155>;
gpmc,adv-on-ns = <15>;
gpmc,adv-rd-off-ns = <40>;
gpmc,adv-wr-off-ns = <40>;
gpmc,oe-on-ns = <45>;
gpmc,oe-off-ns = <145>;
gpmc,we-on-ns = <45>;
gpmc,we-off-ns = <145>;
gpmc,rd-cycle-ns = <155>;
gpmc,wr-cycle-ns = <155>;
gpmc,access-ns = <145>;
gpmc,page-burst-access-ns = <20>;
gpmc,bus-turnaround-ns = <20>;
gpmc,cycle2cycle-delay-ns = <20>;
gpmc,wait-monitoring-ns = <0>;
gpmc,clk-activation-ns = <0>;
gpmc,wr-data-mux-bus-ns = <45>;
gpmc,wr-access-ns = <145>;
};
uart@3,1 {
compatible = "ns16550a";
reg = <3 0x100 8>; /* CS3, offset 0x100, IO size 8 */
bank-width = <2>;
reg-shift = <1>;
reg-io-width = <1>;
interrupt-parent = <&gpio4>;
interrupts = <6 IRQ_TYPE_EDGE_RISING>; /* gpio102 */
clock-frequency = <1843200>;
current-speed = <115200>;
};
uart@3,2 {
compatible = "ns16550a";
reg = <3 0x200 8>; /* CS3, offset 0x200, IO size 8 */
bank-width = <2>;
reg-shift = <1>;
reg-io-width = <1>;
interrupt-parent = <&gpio4>;
interrupts = <6 IRQ_TYPE_EDGE_RISING>; /* gpio102 */
clock-frequency = <1843200>;
current-speed = <115200>;
};
uart@3,3 {
compatible = "ns16550a";
reg = <3 0x300 8>; /* CS3, offset 0x300, IO size 8 */
bank-width = <2>;
reg-shift = <1>;
reg-io-width = <1>;
interrupt-parent = <&gpio4>;
interrupts = <6 IRQ_TYPE_EDGE_RISING>; /* gpio102 */
clock-frequency = <1843200>;
current-speed = <115200>;
};
ethernet@gpmc {