diff options
| author | Nitin Yadav <n-yadav@ti.com> | 2022-09-15 13:56:15 +0530 |
|---|---|---|
| committer | Anand Gadiyar <gadiyar@ti.com> | 2022-09-18 21:41:38 -0500 |
| commit | 48625fb0a1d82e4c01287482f79a13e28105de3d (patch) | |
| tree | ab95dc3ba39b1a03235dab82108a7e93f4d4f086 /configs | |
| parent | bae522d534768449e811eca14edae29db618aa06 (diff) | |
arch: arm: mach-k3: Workaround errata ID i2331
Errata doc: https://www.ti.com/lit/er/sprz457e/sprz457e.pdf
Errata ID i2331 CPSW: Device lockup when reading CPSW registers
Details: A device lockup can occur during the second read of any CPSW
subsystem register after any MAIN domain power on reset (POR). A MAIN
domain POR occurs using the hardware MCU_PORz signal, or via software
using CTRLMMR_RST_CTRL.SW_MAIN_POR or CTRLMMR_MCU_RST_CTRL.SW_MAIN_POR.
After these resets, the processor and internal bus structures may get
into a state which is only recoverable with full device reset using
MCU_PORz.
Due to this errata, Ethernet boot should not be used on this device.
Workaround(s): To avoid the lockup, a warm reset should be issued after
a MAIN domain POR and before any access to the CPSW registers. The warm
reset realigns internal clocks and prevents the lockup from happening.
Workaround above errata by calling do_reset() in case of cold boot in
order to trigger warm reset. This needs enabling SYSRESET driver in R5
SPL to enable TI SCI reset driver.
Signed-off-by: Nitin Yadav <n-yadav@ti.com>
Diffstat (limited to 'configs')
| -rw-r--r-- | configs/am64x_evm_r5_defconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/configs/am64x_evm_r5_defconfig b/configs/am64x_evm_r5_defconfig index 090014a304..c143e73104 100644 --- a/configs/am64x_evm_r5_defconfig +++ b/configs/am64x_evm_r5_defconfig @@ -181,3 +181,6 @@ CONFIG_USB_GADGET_VENDOR_NUM=0x0451 CONFIG_USB_GADGET_PRODUCT_NUM=0x6165 CONFIG_USB_GADGET_DOWNLOAD=y CONFIG_FS_FAT_MAX_CLUSTSIZE=16384 +CONFIG_SYSRESET=y +CONFIG_SPL_SYSRESET=y +CONFIG_SYSRESET_TI_SCI=y |