Hi Pratyush,

+/**
+ * spi_nor_spimem_setup_op() - Set up common properties of a spi-mem 

op.

+ * @nor:      pointer to a 'struct spi_nor'
+ * @op:         pointer to the 'struct spi_mem_op' whose properties
+ *         need to be initialized.
+ * @proto:      the protocol from which the properties need to be set.
+ */
+void spi_nor_spimem_setup_op(const struct spi_nor *nor,
+              struct spi_mem_op *op,
+              const enum spi_nor_protocol proto)
+{
+   u8 ext;
+
+   op->cmd.buswidth = spi_nor_get_protocol_inst_nbits(proto);
+
+   if (op->addr.nbytes)
+      op->addr.buswidth = spi_nor_get_protocol_addr_nbits(proto);
+
+   if (op->dummy.nbytes)
+      op->dummy.buswidth = spi_nor_get_protocol_addr_nbits(proto);
+
+   if (op->data.nbytes)
+      op->data.buswidth = spi_nor_get_protocol_data_nbits(proto);
+
+   if (spi_nor_protocol_is_dtr(proto)) {

As mentioned before that I am also patching mx25* which supports 8S-8S-8S 
and 
8D-8D-8D mode.

please patch to spi_nor_protocol_is_8_8_8(proto) for 8S-8S-8S mode 
support.

+      /*
+       * spi-mem supports mixed DTR modes, but right now we can only
+       * have all phases either DTR or STR. IOW, spi-mem can have
+       * something like 4S-4D-4D, but spi-nor can't. So, set all 4
+       * phases to either DTR or STR.
+       */

        if (spi_nor_protocol_is_8D_8D_8D(proto) {

+      op->cmd.dtr = op->addr.dtr = op->dummy.dtr
+                = op->data.dtr = true;
+
+      /* 2 bytes per clock cycle in DTR mode. */
+      op->dummy.nbytes *= 2;

        }

+
+      ext = spi_nor_get_cmd_ext(nor, op);
+      op->cmd.opcode = (op->cmd.opcode << 8) | ext;
+      op->cmd.nbytes = 2;
+   }
+}
+

thanks & best regards,
Mason


CONFIDENTIALITY NOTE:

This e-mail and any attachments may contain confidential information 
and/or personal data, which is protected by applicable laws. Please be 
reminded that duplication, disclosure, distribution, or use of this e-mail 
(and/or its attachments) or any part thereof is prohibited. If you receive 
this e-mail in error, please notify us immediately and delete this mail as 
well as its attachment(s) from your system. In addition, please be 
informed that collection, processing, and/or use of personal data is 
prohibited unless expressly permitted by personal data protection laws. 
Thank you for your attention and cooperation.

Macronix International Co., Ltd.

=====================================================================



============================================================================

CONFIDENTIALITY NOTE:

This e-mail and any attachments may contain confidential information and/or personal data, which is protected by applicable laws. Please be reminded that duplication, disclosure, distribution, or use of this e-mail (and/or its attachments) or any part thereof is prohibited. If you receive this e-mail in error, please notify us immediately and delete this mail as well as its attachment(s) from your system. In addition, please be informed that collection, processing, and/or use of personal data is prohibited unless expressly permitted by personal data protection laws. Thank you for your attention and cooperation.

Macronix International Co., Ltd.

=====================================================================


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel