HI,
> -----Original Message----- > From: Boris Brezillon [mailto:boris.brezil...@bootlin.com] > Sent: Monday, October 22, 2018 1:32 PM > To: Yogesh Narayan Gaur <yogeshnarayan.g...@nxp.com> > Cc: Cyrille Pitchen <cyrille.pitc...@wedev4u.fr>; Tudor Ambarus > <tudor.amba...@microchip.com>; marek.va...@gmail.com; > dw...@infradead.org; computersforpe...@gmail.com; rich...@nod.at; > linux-kernel@vger.kernel.org; nicolas.fe...@microchip.com; > cyrille.pitc...@microchip.com; linux-...@lists.infradead.org; linux-arm- > ker...@lists.infradead.org; cristian.bir...@microchip.com; Mark Brown > <broo...@kernel.org> > Subject: Re: [PATCH v3 1/2] mtd: spi-nor: add support to non-uniform SFDP SPI > NOR flash memories > > On Mon, 22 Oct 2018 06:04:13 +0000 > Yogesh Narayan Gaur <yogeshnarayan.g...@nxp.com> wrote: > > > -static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const > > u32 *smpt) > > +static const u32 *spi_nor_get_map_in_use(struct spi_nor *nor, const > > +u32 *smpt, u32 smpt_len) > > { > > const u32 *ret = NULL; > > - u32 i, addr; > > + u32 i, addr, nmaps; > > int err; > > u8 addr_width, read_opcode, read_dummy; > > u8 read_data_mask, data_byte, map_id; > > + bool map_id_is_valid = false; > > > > addr_width = nor->addr_width; > > read_dummy = nor->read_dummy; > > read_opcode = nor->read_opcode; > > > > + for (i = 0; i<smpt_len; i++) > > + pr_info("%s:%i smpt[%d]=%08x\n", __func__, __LINE__, > > + i, smpt[i]); > > + > > map_id = 0; > > - i = 0; > > /* Determine if there are any optional Detection Command > > Descriptors */ > > - while (!(smpt[i] & SMPT_DESC_TYPE_MAP)) { > > + for (i = 0; i< smpt_len; i++) { > > + if (!(smpt[i] & SMPT_DESC_TYPE_MAP)) > > + break; > > + > > read_data_mask = SMPT_CMD_READ_DATA(smpt[i]); > > nor->addr_width = spi_nor_smpt_addr_width(nor, smpt[i]); > > nor->read_dummy = spi_nor_smpt_read_dummy(nor, > > smpt[i]); > > Could you also print the ->addr_width, ->read_dummy and ->read_opcode here? > It didn't showing any print messages here, did above line " if (!(smpt[i] & SMPT_DESC_TYPE_MAP))" also needs to be changes to " if ((smpt[i] & SMPT_DESC_TYPE_MAP))"? Below is the log, with the suggested change of modifying as > + for (nmaps = 0; nmaps< smpt_len; nmaps++) { > + if((smpt[nmaps] & SMPT_DESC_TYPE_MAP)) [ 1.625992] m25p80 spi0.0: found s25fl512s, expected m25p80 [ 1.631681] spi_nor_get_map_in_use:2880 smpt[0]=08ff65fc [ 1.636988] spi_nor_get_map_in_use:2880 smpt[1]=00000004 [ 1.642292] spi_nor_get_map_in_use:2880 smpt[2]=04ff65fc [ 1.647596] spi_nor_get_map_in_use:2880 smpt[3]=00000002 [ 1.652898] spi_nor_get_map_in_use:2880 smpt[4]=02ff65fd [ 1.658200] spi_nor_get_map_in_use:2880 smpt[5]=00000004 [ 1.663503] spi_nor_get_map_in_use:2880 smpt[6]=ff0201fe [ 1.668806] spi_nor_get_map_in_use:2880 smpt[7]=00007ff1 [ 1.674108] spi_nor_get_map_in_use:2880 smpt[8]=00037ff4 [ 1.679412] spi_nor_get_map_in_use:2880 smpt[9]=03fbfff4 [ 1.684715] spi_nor_get_map_in_use:2880 smpt[10]=ff0203fe [ 1.690105] spi_nor_get_map_in_use:2880 smpt[11]=03fbfff4 [ 1.695495] spi_nor_get_map_in_use:2880 smpt[12]=00037ff4 [ 1.700886] spi_nor_get_map_in_use:2880 smpt[13]=00007ff1 [ 1.706275] spi_nor_get_map_in_use:2880 smpt[14]=ff0005ff [ 1.711664] spi_nor_get_map_in_use:2880 smpt[15]=03fffff4 [ 1.717053] spi_nor_get_map_in_use:2910 NO map_id [ 1.721777] m25p80 spi0.0: s25fl512s (65536 Kbytes) Didn't throw any return error. -- Regards, Yogesh Gaur > > @@ -2894,18 +2900,35 @@ static const u32 *spi_nor_get_map_in_use(struct > spi_nor *nor, const u32 *smpt) > > * Configuration that is currently in use. > > */ > > map_id = map_id << 1 | !!(data_byte & read_data_mask); > > + map_id_is_valid = true; > > i = i + 2; > > }
