To be able to use the three none AO uarts of the meson gx SoCs (uart_A,
uart_B & uart_C), the core clock has to be enabled (see chapter 22.3 of
the public s905 data sheet).
At least the u-boot of my s905 based media player (netxeon minimx-g)
doesn't do this. so the driver must enable the clock.
This patch set does:
- exposes the UART clock ids to the dtb
- adds documentation for the dt-bindings of meson_uart
- adds the core clock handling to the driver
- adds the core clock handling to meson-gxbb.dtsi and meson-gxl.dtsi
The patchset is based on the branch "master" of the repository in [1]
Changes since v2
- mail subjects reworked
- add clocks/clock-names to the documentation
- add core clock handling to meson-gxbb.dtsi & meson-gxl.dtsi
Changes since v1
- use git to produce the patch set
- added the clock ids for uart_B and uart_C
[1] git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic.git
Helmut Klein (4):
clk: meson: gxbb: expose CLKID_UARTx
dt-bindings: meson_uart: add documentation for meson UARTs
tty/serial: meson_uart: add the core clock handling to the driver
ARM64: dts: meson-gx: add core clock support for uart_A, uart_B and
uart_C
.../bindings/serial/amlogic,meson_uart.txt | 30 ++++++++++++++++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 15 +++++++++++
arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 15 +++++++++++
drivers/clk/meson/gxbb.h | 6 ++---
drivers/tty/serial/meson_uart.c | 10 ++++++++
include/dt-bindings/clock/gxbb-clkc.h | 3 +++
6 files changed, 76 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/serial/amlogic,meson_uart.txt
--
2.11.0
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