| Message ID | 20200517162135.110364-1-linux@roeck-us.net |
|---|---|
| Headers | show |
| Series | hw/arm: Implement i.MX watchdog support | expand |
On Sun, 17 May 2020 at 17:21, Guenter Roeck <linux@roeck-us.net> wrote: > > The current i.MX watchdog implementation only supports resets. > This patch series implements the full watchdog, including optional > pretimeout support. > > Notable changes: > - The existing i.MX watchdog emulation (which only emulates syste resets) > is moved from hw/misc to hw/watchdog and renamed to match the naming > convention in hw/watchdog (patch 1/8). > - Full watchdog support is implemented in patch 2/8. > - The watchdog is wired up for i.MX25 and i.MX31 emulations (patch 3/8 and > 4/8). > - The watchdog interrupt (for pretimeout support) is connected for > i.MX6, i.MX6UL, and i.MX7 emulations (patch 5/8, 6/8, and 8/8). > - For i.MX7, various devices are wired up as unimplemented > devices (patch 7/8). This was necessary to avoid crashes when > booting recent Linux kernels. > > The code was tested with all available emulations. Applied to target-arm.next, thanks. -- PMM
The current i.MX watchdog implementation only supports resets. This patch series implements the full watchdog, including optional pretimeout support. Notable changes: - The existing i.MX watchdog emulation (which only emulates syste resets) is moved from hw/misc to hw/watchdog and renamed to match the naming convention in hw/watchdog (patch 1/8). - Full watchdog support is implemented in patch 2/8. - The watchdog is wired up for i.MX25 and i.MX31 emulations (patch 3/8 and 4/8). - The watchdog interrupt (for pretimeout support) is connected for i.MX6, i.MX6UL, and i.MX7 emulations (patch 5/8, 6/8, and 8/8). - For i.MX7, various devices are wired up as unimplemented devices (patch 7/8). This was necessary to avoid crashes when booting recent Linux kernels. The code was tested with all available emulations. v3: Improve handling of write-once registers and bits Stop timers in reset function Use explicit policy for timers v2: Select WDT_IMX2 explicitly for supported platforms, not automatically with IMX Rebased to current master (as of 3/22) Fixed typo "octop" -> "ocotp" Added Reviewed-by: tags where given ---------------------------------------------------------------- Guenter Roeck (8): hw: Move i.MX watchdog driver to hw/watchdog hw/watchdog: Implement full i.MX watchdog support hw/arm/fsl-imx25: Wire up watchdog hw/arm/fsl-imx31: Wire up watchdog hw/arm/fsl-imx6: Connect watchdog interrupts hw/arm/fsl-imx6ul: Connect watchdog interrupts hw/arm/fsl-imx7: Instantiate various unimplemented devices hw/arm/fsl-imx7: Connect watchdog interrupts MAINTAINERS | 2 + hw/arm/Kconfig | 5 + hw/arm/fsl-imx25.c | 10 ++ hw/arm/fsl-imx31.c | 6 + hw/arm/fsl-imx6.c | 9 ++ hw/arm/fsl-imx6ul.c | 10 ++ hw/arm/fsl-imx7.c | 35 ++++++ hw/misc/Makefile.objs | 1 - hw/misc/imx2_wdt.c | 90 -------------- hw/watchdog/Kconfig | 3 + hw/watchdog/Makefile.objs | 1 + hw/watchdog/wdt_imx2.c | 262 +++++++++++++++++++++++++++++++++++++++++ include/hw/arm/fsl-imx25.h | 5 + include/hw/arm/fsl-imx31.h | 4 + include/hw/arm/fsl-imx6.h | 2 +- include/hw/arm/fsl-imx6ul.h | 2 +- include/hw/arm/fsl-imx7.h | 23 +++- include/hw/misc/imx2_wdt.h | 33 ------ include/hw/watchdog/wdt_imx2.h | 78 ++++++++++++ 19 files changed, 454 insertions(+), 127 deletions(-) delete mode 100644 hw/misc/imx2_wdt.c create mode 100644 hw/watchdog/wdt_imx2.c delete mode 100644 include/hw/misc/imx2_wdt.h create mode 100644 include/hw/watchdog/wdt_imx2.h