lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 24 Jan 2020 10:30:20 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Bryan ODonoghue <pure.logic@...us-software.ie>, Leonard Crestez <leonard.crestez@....com>, Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.19 450/639] nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing From: Bryan O'Donoghue <pure.logic@...us-software.ie> [ Upstream commit 0493c4792b4eb260441e57f52cc11a9ded48b5a7 ] The i.MX6 and i.MX8 both have a bit-field spanning bits 27:22 called the WAIT field. The WAIT field according to the documentation for both parts "specifies time interval between auto read and write access in one time program. It is given in number of ipg_clk periods." This patch ensures that the relevant field is read and written back to the timing register. Fixes: 0642bac7da42 ("nvmem: imx-ocotp: add write support") Signed-off-by: Bryan O'Donoghue <pure.logic@...us-software.ie> Reviewed-by: Leonard Crestez <leonard.crestez@....com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/nvmem/imx-ocotp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c index 926d9cc080cf4..04421a73f74aa 100644 --- a/drivers/nvmem/imx-ocotp.c +++ b/drivers/nvmem/imx-ocotp.c @@ -189,7 +189,8 @@ static void imx_ocotp_set_imx6_timing(struct ocotp_priv *priv) strobe_prog = clk_rate / (1000000000 / 10000) + 2 * (DEF_RELAX + 1) - 1; strobe_read = clk_rate / (1000000000 / 40) + 2 * (DEF_RELAX + 1) - 1; - timing = strobe_prog & 0x00000FFF; + timing = readl(priv->base + IMX_OCOTP_ADDR_TIMING) & 0x0FC00000; + timing |= strobe_prog & 0x00000FFF; timing |= (relax << 12) & 0x0000F000; timing |= (strobe_read << 16) & 0x003F0000; -- 2.20.1
Powered by blists - more mailing lists