On Mon, Aug 07, 2017 at 05:17:47PM +0300, Oleksandr Shamray wrote:
> Driver adds support of Aspeed 2500/2400 series SOC JTAG master controller.
>
> Driver implements the following jtag ops:
> - freq_get;
> - freq_set;
> - status_get;
> - idle;
> - xfer;
>
> It has been tested on Mellanox system with BMC equipped with
> Aspeed 2520 SoC for programming CPLD devices.
>
> Signed-off-by: Jiri Pirko <jiri@xxxxxxxxxxx>
> Signed-off-by: Oleksandr Shamray <oleksandrs@xxxxxxxxxxxx>
> ---
> v1->v2
> Comments pointed by Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> - change license type from GPLv2/BSD to GPLv2
>
> Comments pointed by Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> - Add clk_prepare_enable/clk_disable_unprepare in clock init/deinit
> - Change .compatible to soc-specific compatible names
> aspeed,aspeed4000-jtag/aspeed5000-jtag
> - Added dt-bindings
>
> Comments pointed by Arnd Bergmann <arnd@xxxxxxxx>
> - Reorder functions and removed the forward declarations
> - Add static const qualifier to state machine states transitions
> - Change .compatible to soc-specific compatible names
> aspeed,aspeed4000-jtag/aspeed5000-jtag
> - Add dt-bindings
>
> Comments pointed by Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> - Change module name jtag-aspeed in description in Kconfig
>
> Comments pointed by kbuild test robot <lkp@xxxxxxxxx>
> - Remove invalid include <asm/mach-types.h>
> - add resource_size instead of calculation
> ---
> .../devicetree/bindings/jtag/aspeed-jtag.txt | 27 +
Please split binding to separate patch.
> drivers/jtag/Kconfig | 13 +
> drivers/jtag/Makefile | 1 +
> drivers/jtag/jtag-aspeed.c | 774 ++++++++++++++++++++
> 4 files changed, 815 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/jtag/aspeed-jtag.txt
> create mode 100644 drivers/jtag/jtag-aspeed.c
>
> diff --git a/Documentation/devicetree/bindings/jtag/aspeed-jtag.txt b/Documentation/devicetree/bindings/jtag/aspeed-jtag.txt
> new file mode 100644
> index 0000000..27b1d34
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/jtag/aspeed-jtag.txt
> @@ -0,0 +1,27 @@
> +Aspeed JTAG driver for ast2400 and ast2500 SoC
> +
> +Required properties:
> +- compatible: Should be one of
> + - "aspeed,aspeed2400-jtag"
> + - "aspeed,aspeed2500-jtag"
> +- reg contains the offset and length of the JTAG memory
> + region
> +- clocks root clock of bus, should reference the APB clock
> +- reg-shift device register offsets are shifted by this value
It doesn't appear that you use this. It should be implied by the
compatible in any case.
> +- interrupts should contain JTAG controller interrupt
> +
> +Optional properties:
> +- status defines the operation status of the JTAG. Valid
> +values are:
> + - "disabled" the JTAG is disabled
> + - "okay" the JTAG is enabled
Don't need to document status. It's implied for any node.
> +
> +Example:
> +jtag: jtag@1e6e4000 {
> + compatible = "aspeed,aspeed2500-jtag";
> + reg = <0x1e6e4000 0x1c>;
> + reg-shift = <2>;
> + clocks = <&clk_apb>;
> + interrupts = <43>;
> + status = "disabled";
Don't need to show status in examples either.
> +};
> \ No newline at end of file
^^^
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