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mtd: nand: Add a few more timings to nand_sdr_timings

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Add the tR_max, tBERS_max, tPROG_max and tCCS_min timings to the
nand_sdr_timings struct.
Assign default/safe values for the statically defined timings, and
extract them from the ONFI parameter table if the NAND is ONFI
compliant.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
[Linux commit: 204e7ecd47e26cc12d9e8e8a7e7a2eeb9573f0ba
 Fixup commit: 6d29231000bbe0fb9e4893a9c68151ffdd3b5469]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Boris Brezillon 2017-11-22 02:38:21 +09:00 • committed by Masahiro Yamada
parent 3d841b3214
commit 6f84b26b53
2 changed files with 33 additions and 1 deletions
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8
include/linux/mtd/nand.h
View file

@ -595,6 +595,10 @@ struct nand_buffers {
*
* All these timings are expressed in picoseconds.
*
* @tBERS_max: Block erase time
* @tCCS_min: Change column setup time
* @tPROG_max: Page program time
* @tR_max: Page read time
* @tALH_min: ALE hold time
* @tADL_min: ALE to data loading time
* @tALS_min: ALE setup time
@ -632,6 +636,10 @@ struct nand_buffers {
* @tWW_min: WP# transition to WE# low
*/
struct nand_sdr_timings {
u64 tBERS_max;
u32 tCCS_min;
u64 tPROG_max;
u64 tR_max;
u32 tALH_min;
u32 tADL_min;
u32 tALS_min;