kernel/linux.git/drivers/nvmem/sprd-efuse.c, branch v5.7.4Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v5.7.42020-03-23T19:05:23+00:00nvmem: sprd: Determine double data programming from device data2020-03-23T19:05:23+00:00Baolin Wangbaolin.wang7@gmail.com2020-03-23T15:00:05+00:00urn:sha1:4bd5a15d933c1703910c756d961dbbd2e6d52181
We've saved the double data flag in the device data, so we should
use it when programming a block.
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200323150007.7487-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
nvmem: sprd: Optimize the block lock operation2020-03-23T19:05:23+00:00Freeman Liufreeman.liu@unisoc.com2020-03-23T15:00:04+00:00urn:sha1:5af25388ba250ae9624a22587cc98685dc6d4e9e
We have some cases that will programme the eFuse block partially multiple
times, so we should allow the block to be programmed again if it was
programmed partially. But we should lock the block if the whole block
was programmed. Thus add a condition to validate if we need lock the
block or not.
Moreover we only enable the auto-check function when locking the block.
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200323150007.7487-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
nvmem: sprd: Fix the block lock operation2020-03-23T19:05:23+00:00Freeman Liufreeman.liu@unisoc.com2020-03-23T15:00:03+00:00urn:sha1:c66ebde4d988b592e8f0008e04c47cc4950a49d3
According to the Spreadtrum eFuse specification, we should write 0 to
the block to trigger the lock operation.
Fixes: 096030e7f449 ("nvmem: sprd: Add Spreadtrum SoCs eFuse support")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200323150007.7487-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
nvmem: sprd: Add Spreadtrum SoCs eFuse support2019-11-05T17:35:31+00:00Freeman Liufreeman.liu@unisoc.com2019-10-29T11:42:37+00:00urn:sha1:096030e7f449caac81ee140d10d9b4b360b723fd
The Spreadtrum eFuse controller is widely used to dump chip ID,
configuration setting, function select and so on, as well as
supporting one-time programming.
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20191029114240.14905-8-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>