diff options
Diffstat (limited to 'package/boot/arm-trusted-firmware-mvebu/patches-mox-boot-builder/102-avs-Validate-VDD-value-from-OTP.patch')
| -rw-r--r-- | package/boot/arm-trusted-firmware-mvebu/patches-mox-boot-builder/102-avs-Validate-VDD-value-from-OTP.patch | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/package/boot/arm-trusted-firmware-mvebu/patches-mox-boot-builder/102-avs-Validate-VDD-value-from-OTP.patch b/package/boot/arm-trusted-firmware-mvebu/patches-mox-boot-builder/102-avs-Validate-VDD-value-from-OTP.patch deleted file mode 100644 index d44eb21181..0000000000 --- a/package/boot/arm-trusted-firmware-mvebu/patches-mox-boot-builder/102-avs-Validate-VDD-value-from-OTP.patch +++ /dev/null @@ -1,52 +0,0 @@ -From 15ff10623c83ee2e626d93d16e022b115dcb608f Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> -Date: Sat, 10 Apr 2021 16:56:12 +0200 -Subject: [PATCH] avs: Validate VDD value from OTP -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -CPU VDD voltage value for 1.2 GHz frequency on some Espressobin boards is -not set and raw value 0x00 is returned. In this case init_avs() function -calculated CPU VDD voltage value to 0x00 + AVS_VDD_BASE = 0.898 V, which is -too low for any operation and Espressobin board immediately crashed -init_avs() function set this low value. - -This patch fixes above issue by validating returned VDD value from OTP and -using default VDD value when invalid value is in OTP. With this patch -init_avs() function does cause CPU crash anymore. - -Signed-off-by: Pali Rohár <pali@kernel.org> -Signed-off-by: Marek Behún <marek.behun@nic.cz> ---- - wtmi/avs.c | 14 ++++++++++---- - 1 file changed, 10 insertions(+), 4 deletions(-) - -diff --git a/wtmi/avs.c b/wtmi/avs.c -index 36ca9fa..4624359 100644 ---- a/wtmi/avs.c -+++ b/wtmi/avs.c -@@ -140,10 +140,16 @@ int init_avs(u32 speed) - } - - if (svc_rev >= SVC_REVISION_2) { -- vdd_otp = ((otp_data[OTP_DATA_SVC_SPEED_ID] >> shift) + -- AVS_VDD_BASE) & AVS_VDD_MASK; -- regval |= (vdd_otp << HIGH_VDD_LIMIT_OFF); -- regval |= (vdd_otp << LOW_VDD_LIMIT_OFF); -+ vdd_otp = (otp_data[OTP_DATA_SVC_SPEED_ID] >> shift) & -+ AVS_VDD_MASK; -+ if (!vdd_otp || vdd_otp + AVS_VDD_BASE > AVS_VDD_MASK) { -+ regval |= (vdd_default << HIGH_VDD_LIMIT_OFF); -+ regval |= (vdd_default << LOW_VDD_LIMIT_OFF); -+ } else { -+ vdd_otp += AVS_VDD_BASE; -+ regval |= (vdd_otp << HIGH_VDD_LIMIT_OFF); -+ regval |= (vdd_otp << LOW_VDD_LIMIT_OFF); -+ } - } else { - regval |= (vdd_default << HIGH_VDD_LIMIT_OFF); - regval |= (vdd_default << LOW_VDD_LIMIT_OFF); --- -2.30.2 - |