Talos™ II Linux sources for OpenPOWER https://git.raptorcs.com/git/talos-op-linux/atom?h=master 2020-01-30T23:46:02+00:00 2020-01-30T23:46:02+00:00 Linus Torvalds torvalds@linux-foundation.org 2020-01-30T23:46:02+00:00 urn:sha1:35c222fd323629cf2e834eb8aff77058856ffdda Pull MTD updates from Miquel Raynal: "MTD core - block2mtd: page index should use pgoff_t - maps: physmap: minimal Runtime PM support - maps: pcmciamtd: avoid possible sleep-in-atomic-context bugs - concat: Fix a comment referring to an unknown symbol Raw NAND: - Macronix: Use match_string() helper - Atmel: switch to using devm_fwnode_gpiod_get() - Denali: rework the SKIP_BYTES feature and add reset controlling - Brcmnand: set appropriate DMA mask - Cadence: add unspecified HAS_IOMEM dependency - Various cleanup. Onenand: - Rename Samsung and Omap2 drivers to avoid possible build warnings - Enable compile testing - Various build issues - Kconfig cleanup SPI-NAND: - Support for Toshiba TC58CVG2S0HRAIJ SPI-NOR: - Add support for TB selection using SR bit 6, - Add support for few flashes" * tag 'mtd/for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (41 commits) mtd: concat: Fix a comment referring to an unknown symbol mtd: rawnand: add unspecified HAS_IOMEM dependency mtd: block2mtd: page index should use pgoff_t mtd: maps: physmap: Add minimal Runtime PM support mtd: maps: pcmciamtd: fix possible sleep-in-atomic-context bugs in pcmciamtd_set_vpp() mtd: onenand: Rename omap2 driver to avoid a build warning mtd: onenand: Use a better name for samsung driver mtd: rawnand: atmel: switch to using devm_fwnode_gpiod_get() mtd: spinand: add support for Toshiba TC58CVG2S0HRAIJ mtd: rawnand: macronix: Use match_string() helper to simplify the code mtd: sharpslpart: Fix unsigned comparison to zero mtd: onenand: Enable compile testing of OMAP and Samsung drivers mtd: onenand: samsung: Fix printing format for size_t on 64-bit mtd: onenand: samsung: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit mtd: rawnand: denali: remove hard-coded DENALI_DEFAULT_OOB_SKIP_BYTES mtd: rawnand: denali_dt: add reset controlling dt-bindings: mtd: denali_dt: document reset property mtd: rawnand: denali_dt: Add support for configuring SPARE_AREA_SKIP_BYTES mtd: rawnand: denali_dt: error out if platform has no associated data mtd: rawnand: brcmnand: Set appropriate DMA mask ... 2020-01-27T21:03:00+00:00 Linus Torvalds torvalds@linux-foundation.org 2020-01-27T21:03:00+00:00 urn:sha1:6a1000bd27035bba17ede9dc915166276a811edb Pull ioremap updates from Christoph Hellwig: "Remove the ioremap_nocache API (plus wrappers) that are always identical to ioremap" * tag 'ioremap-5.6' of git://git.infradead.org/users/hch/ioremap: remove ioremap_nocache and devm_ioremap_nocache MIPS: define ioremap_nocache to ioremap 2020-01-27T16:49:15+00:00 Miquel Raynal miquel.raynal@bootlin.com 2020-01-27T16:49:15+00:00 urn:sha1:4575243c5c173f8adbc08a5c6ea2269742ea2b47 Raw NAND * Macronix: Use match_string() helper * Atmel: switch to using devm_fwnode_gpiod_get() * Denali: rework the SKIP_BYTES feature and add reset controlling * Brcmnand: set appropriate DMA mask * Various cleanup. Onenand drivers * Rename Samsung and Omap2 drivers to avoid possible build warnings * Enable compile testing * Various build issues * Kconfig cleanup SPI-NAND * Support for Toshiba TC58CVG2S0HRAIJ 2020-01-27T16:44:21+00:00 Brendan Higgins brendanhiggins@google.com 2019-12-11T19:27:37+00:00 urn:sha1:baebaa2b13d92bd588ed8d06b28d787611b52a46 Currently CONFIG_MTD_NAND_CADENCE implicitly depends on CONFIG_HAS_IOMEM=y; consequently, on architectures without IOMEM we get the following build error: ld: drivers/mtd/nand/raw/cadence-nand-controller.o: in function `cadence_nand_dt_probe.cold.31': drivers/mtd/nand/raw/cadence-nand-controller.c:2969: undefined reference to `devm_platform_ioremap_resource' ld: drivers/mtd/nand/raw/cadence-nand-controller.c:2977: undefined reference to `devm_ioremap_resource' Fix the build error by adding the unspecified dependency. Reported-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:34+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2020-01-04T20:27:23+00:00 urn:sha1:7a95a72e052a7d15333de932e0a89b4934ce6085 devm_fwnode_get_index_gpiod_from_child() is going away as the name is too unwieldy, let's switch to using the new devm_fwnode_gpiod_get(). Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:34+00:00 YueHaibing yuehaibing@huawei.com 2019-12-31T01:36:48+00:00 urn:sha1:db7b6aeca2a7cc500a3f31d8dd1625272771f36b match_string() returns the array index of a matching string. Use it instead of the open-coded implementation. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:33+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2019-12-20T11:31:55+00:00 urn:sha1:a3b839e4e061c60c5f9abf4f3af638f712bf4285 As commit 0d55c668b218 (mtd: rawnand: denali: set SPARE_AREA_SKIP_BYTES register to 8 if unset") says, there were three solutions discussed: [1] Add a DT property to specify the skipped bytes in OOB [2] Associate the preferred value with compatible [3] Hard-code the default value in the driver At that time, [3] was chosen because I did not have enough information about the other platforms than UniPhier. That commit also says "The preferred value may vary by platform. If so, please trade up to a different solution." My intention was to replace [3] with [2], not keep both [2] and [3]. Now that we have switched to [2] for SOCFPGA's SPARE_AREA_SKIP_BYTES=2, [3] should be removed. This should be OK because denali_pci.c just gets back to the original behavior. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:33+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2019-12-20T11:31:54+00:00 urn:sha1:711fafc287e1be25b4420752062f852930e4c1d2 According to the Denali NAND Flash Memory Controller User's Guide, this IP has two reset signals. rst_n: reset most of FFs in the controller core reg_rst_n: reset all FFs in the register interface, and in the initialization sequencer This commit supports controlling those reset signals. It is possible to control them separately from the IP point of view although they might be often tied up together in actual SoC integration. The IP spec says, asserting only the reg_rst_n without asserting rst_n will cause unpredictable behavior in the controller. So, the driver deasserts ->rst_reg and ->rst in this order. Another thing that should be kept in mind is the automated initialization sequence (a.k.a. 'bootstrap' process) is kicked off when reg_rst_n is deasserted. When the reset is deasserted, the controller issues a RESET command to the chip select 0, and attempts to read out the chip ID, and further more, ONFI parameters if it is an ONFI-compliant device. Then, the controller sets up the relevant registers based on the detected device parameters. This process might be useful for tiny boot firmware, but is redundant for Linux Kernel because nand_scan_ident() probes devices and sets up parameters accordingly. Rather, this hardware feature is annoying because it ends up with misdetection due to bugs. So, commit 0615e7ad5d52 ("mtd: nand: denali: remove Toshiba and Hynix specific fixup code") changed the driver to not rely on it. However, there is no way to prevent it from running. The IP provides the 'bootstrap_inhibit_init' port to suppress this sequence, but it is usually out of software control, and dependent on SoC implementation. As for the Socionext UniPhier platform, LD4 always enables it. For the later SoCs, the bootstrap sequence runs depending on the boot mode. I added usleep_range() to make the driver wait until the sequence finishes. Otherwise, the driver would fail to detect the chip due to the race between the driver and hardware-controlled sequence. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:33+00:00 Marek Vasut marex@denx.de 2019-12-20T11:31:52+00:00 urn:sha1:f5561a7c42d690b51151d955d0a6a80fa3ad6689 The SPARE_AREA_SKIP_BYTES register is reset when the controller reset signal is toggled. Yet, this register must be configured to match the content of the NAND OOB area. The current default value is always set to 8 and is programmed into the hardware in case the hardware was not programmed before (e.g. in a bootloader) with a different value. This however does not work when the block is reset properly by Linux. On Altera SoCFPGA CycloneV, ArriaV and Arria10, which are the SoCFPGA platforms which support booting from NAND, the SPARE_AREA_SKIP_BYTES value must be set to 2. On Socionext Uniphier, the value is 8. This patch adds support for preconfiguring the default value and handles the special SoCFPGA case by setting the default to 2 on all SoCFPGA platforms, while retaining the original behavior and default value of 8 on all the other platforms. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> To: linux-mtd@lists.infradead.org Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> 2020-01-21T19:00:33+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2019-12-20T11:31:51+00:00 urn:sha1:82348201384d4481ab92beecfbca7c195120670e denali->ecc_caps is a mandatory parameter. If it were left unset, nand_ecc_choose_conf() would end up with NULL pointer access. So, every compatible must be associated with proper denali_dt_data. If of_device_get_match_data() returns NULL, let it fail immediately. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>