kernel/drivers/memory/omap-gpmc.c, branch linux-4.1.y

ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure

2018-01-17T17:55:25Z

[ Upstream commit 7807e086a2d1f69cc1a57958cac04fea79fc2112 ] gpmc_probe_onenand_child returns success even on gpmc_onenand_init failure. Fix that. Signed-off-by: Ladislav Michl Acked-by: Roger Quadros Signed-off-by: Tony Lindgren Signed-off-by: Sasha Levin

memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing

2016-07-11T00:19:58Z

[ Upstream commit 8f50b8e57442d28e41bb736c173d8a2490549a82 ] In the omap gpmc driver it can be noticed that GPMC_CONFIG4_OEEXTRADELAY is overwritten by the WEEXTRADELAY value from the device tree and GPMC_CONFIG4_WEEXTRADELAY is not updated by the value from the device tree. As a consequence, the memory accesses cannot be configured properly when the extra delay are needed for OE and WE. Fix the update of GPMC_CONFIG4_WEEXTRADELAY with the value from the device tree file and prevents GPMC_CONFIG4_OEXTRADELAY being overwritten by the WEXTRADELAY value from the device tree. Cc: stable@vger.kernel.org Signed-off-by: Ocquidant, Sebastien Signed-off-by: Roger Quadros Signed-off-by: Sasha Levin

ARM OMAP2+ GPMC: fix programming/showing reserved timing parameters

2015-03-06T10:55:32Z

GPMC_CONFIG1_i parameters CLKACTIVATIONTIME and WAITMONITORINGTIME have reserved values. Raise an error if calculated timings try to program reserved values. GPMC_CONFIG1_i ATTACHEDDEVICEPAGELENGTH and DEVICESIZE were already checked when parsing the DT. Explicitly comment invalid values on gpmc_cs_show_timings for -CLKACTIVATIONTIME -WAITMONITORINGTIME -DEVICESIZE -ATTACHEDDEVICEPAGELENGTH Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: fix WAITMONITORINGTIME divider bug

2015-03-06T10:46:06Z

The WAITMONITORINGTIME is expressed as a number of GPMC_CLK clock cycles, even though the access is defined as asynchronous, and no GPMC_CLK clock is provided to the external device. Still, GPMCFCLKDIVIDER is used as a divider for the GPMC clock, so it must be programmed to define the correct WAITMONITORINGTIME delay. This patch correctly computes WAITMONITORINGTIME in GPMC_CLK cycles instead of GPMC_FCLK cycles, both during programming (gpmc_cs_set_timings) and during retrieval (gpmc_cs_show_timings). Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: calculate GPMCFCLKDIVIDER based on WAITMONITORINGTIME

2015-03-06T10:39:48Z

The WAITMONITORINGTIME is expressed as a number of GPMC_CLK clock cycles, even though the access is defined as asynchronous, and no GPMC_CLK clock is provided to the external device. Still, GPMCFCLKDIVIDER is used as a divider for the GPMC clock, so it must be programmed to define the correct WAITMONITORINGTIME delay. Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for pure asynchronous accesses, i.e. both read and write asynchronous. Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: always program GPMCFCLKDIVIDER

2015-03-06T10:35:45Z

ARM OMAP2+ GPMC: change get_gpmc_timing_reg output for DTS

2015-03-06T10:34:28Z

DTS output was formatted to require additional work when copy-pasting into DTS. Nano-second timings were replaced with interval of values that produce the same number of clock ticks. Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: fix debug output alignment

2015-03-06T10:23:21Z

GPMC debug output is aligned to 10 characters for field names. However, some fields have bigger names, screwing up the alignment. Consequently, alignment was changed to longest field name (17 chars) for now. Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: add bus children

2015-03-06T10:22:25Z

This patch adds support for spawning buses as children of the GPMC. Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros

ARM OMAP2+ GPMC: don't undef DEBUG

2015-03-06T10:15:20Z

OMAP2+ GPMC driver undefines DEBUG, which makes it unnecessarily hard to turn DEBUG on. Remove the offending lines. Signed-off-by: Robert ABEL Acked-by: Tony Lindgren Signed-off-by: Roger Quadros