diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux-5.4/linux-yocto-5.4.69/0021-watchdog-sp5100_tco-Enable-watchdog-on-Family-17h-de.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux-5.4/linux-yocto-5.4.69/0021-watchdog-sp5100_tco-Enable-watchdog-on-Family-17h-de.patch | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux-5.4/linux-yocto-5.4.69/0021-watchdog-sp5100_tco-Enable-watchdog-on-Family-17h-de.patch b/meta-amd-bsp/recipes-kernel/linux-5.4/linux-yocto-5.4.69/0021-watchdog-sp5100_tco-Enable-watchdog-on-Family-17h-de.patch deleted file mode 100644 index 54bfcac5..00000000 --- a/meta-amd-bsp/recipes-kernel/linux-5.4/linux-yocto-5.4.69/0021-watchdog-sp5100_tco-Enable-watchdog-on-Family-17h-de.patch +++ /dev/null @@ -1,59 +0,0 @@ -From 40d0f2c1144301baa2f6080da48e2fc42113c3d0 Mon Sep 17 00:00:00 2001 -From: Guenter Roeck <linux@roeck-us.net> -Date: Thu, 10 Sep 2020 09:31:09 -0700 -Subject: [PATCH 21/21] watchdog: sp5100_tco: Enable watchdog on Family 17h - devices if disabled - -On Family 17h (Ryzen) devices, the WatchdogTmrEn bit of PmDecodeEn not only -enables watchdog memory decoding at 0xfeb00000, it also enables the -watchdog hardware itself. Use this information to enable the watchdog if -it is not already enabled. - -Cc: Jan Kiszka <jan.kiszka@siemens.com> -Tested-by: Jan Kiszka <jan.kiszka@siemens.com> -Link: https://lore.kernel.org/r/20200910163109.235136-2-linux@roeck-us.net -Signed-off-by: Guenter Roeck <linux@roeck-us.net> -Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> ---- - drivers/watchdog/sp5100_tco.c | 18 ++++++++++++++++++ - 1 file changed, 18 insertions(+) - -diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c -index 93bd302ae7c5..b9d234f2959a 100644 ---- a/drivers/watchdog/sp5100_tco.c -+++ b/drivers/watchdog/sp5100_tco.c -@@ -17,6 +17,12 @@ - * AMD Publication 51192 "AMD Bolton FCH Register Reference Guide" - * AMD Publication 52740 "BIOS and Kernel Developer’s Guide (BKDG) - * for AMD Family 16h Models 30h-3Fh Processors" -+ * AMD Publication 55570-B1-PUB "Processor Programming Reference (PPR) -+ * for AMD Family 17h Model 18h, Revision B1 -+ * Processors (PUB) -+ * AMD Publication 55772-A1-PUB "Processor Programming Reference (PPR) -+ * for AMD Family 17h Model 20h, Revision A1 -+ * Processors (PUB) - */ - - /* -@@ -241,6 +247,18 @@ static int sp5100_tco_setupdevice(struct device *dev, - break; - case efch: - dev_name = SB800_DEVNAME; -+ /* -+ * On Family 17h devices, the EFCH_PM_DECODEEN_WDT_TMREN bit of -+ * EFCH_PM_DECODEEN not only enables the EFCH_PM_WDT_ADDR memory -+ * region, it also enables the watchdog itself. -+ */ -+ if (boot_cpu_data.x86 == 0x17) { -+ val = sp5100_tco_read_pm_reg8(EFCH_PM_DECODEEN); -+ if (!(val & EFCH_PM_DECODEEN_WDT_TMREN)) { -+ sp5100_tco_update_pm_reg8(EFCH_PM_DECODEEN, 0xff, -+ EFCH_PM_DECODEEN_WDT_TMREN); -+ } -+ } - val = sp5100_tco_read_pm_reg8(EFCH_PM_DECODEEN); - if (val & EFCH_PM_DECODEEN_WDT_TMREN) - mmio_addr = EFCH_PM_WDT_ADDR; --- -2.17.1 - |