Linux-mtd Archive on lore.kernel.org
 help / color / Atom feed
From: "Cédric Le Goater" <clg@kaod.org>
To: linux-mtd@lists.infradead.org,
	Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: "Mark Rutland" <mark.rutland@arm.com>,
	"Vignesh Raghavendra" <vigneshr@ti.com>,
	linux-aspeed@lists.ozlabs.org, "Andrew Jeffery" <andrew@aj.id.au>,
	"Richard Weinberger" <richard@nod.at>,
	"Marek Vasut" <marek.vasut@gmail.com>,
	"Joel Stanley" <joel@jms.id.au>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Brian Norris" <computersforpeace@gmail.com>,
	"David Woodhouse" <dwmw2@infradead.org>,
	linux-arm-kernel@lists.infradead.org,
	"Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH 15/16] mtd: spi-nor: aspeed: Introduce a HCLK mask for training
Date: Fri,  4 Oct 2019 14:09:33 +0200
Message-ID: <20191004120934.21662-2-clg@kaod.org> (raw)
In-Reply-To: <20191004120934.21662-1-clg@kaod.org>

The AST2600 handles more HCLK divisors than its predecessors.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
---
 drivers/mtd/spi-nor/aspeed-smc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/aspeed-smc.c b/drivers/mtd/spi-nor/aspeed-smc.c
index 85b7ff3bcc91..5fa9956d183e 100644
--- a/drivers/mtd/spi-nor/aspeed-smc.c
+++ b/drivers/mtd/spi-nor/aspeed-smc.c
@@ -41,6 +41,7 @@ struct aspeed_smc_info {
 	u8 we0;			/* shift for write enable bit for CE0 */
 	u8 ctl0;		/* offset in regs of ctl for CE0 */
 	u8 timing;		/* offset in regs of timing */
+	u32 hclk_mask;          /* clock frequency mask in CEx Control reg */
 	u32 hdiv_max;           /* Max HCLK divisor on read timing reg */
 
 	void (*set_4b)(struct aspeed_smc_chip *chip);
@@ -75,6 +76,7 @@ static const struct aspeed_smc_info fmc_2400_info = {
 	.we0 = 16,
 	.ctl0 = 0x10,
 	.timing = 0x94,
+	.hclk_mask = 0xfffff0ff,
 	.hdiv_max = 1,
 	.set_4b = aspeed_smc_chip_set_4b,
 	.optimize_read = aspeed_smc_optimize_read,
@@ -91,6 +93,7 @@ static const struct aspeed_smc_info spi_2400_info = {
 	.we0 = 0,
 	.ctl0 = 0x04,
 	.timing = 0x14,
+	.hclk_mask = 0xfffff0ff,
 	.hdiv_max = 1,
 	.set_4b = aspeed_smc_chip_set_4b_spi_2400,
 	.optimize_read = aspeed_smc_optimize_read,
@@ -105,6 +108,7 @@ static const struct aspeed_smc_info fmc_2500_info = {
 	.we0 = 16,
 	.ctl0 = 0x10,
 	.timing = 0x94,
+	.hclk_mask = 0xfffff0ff,
 	.hdiv_max = 1,
 	.set_4b = aspeed_smc_chip_set_4b,
 	.optimize_read = aspeed_smc_optimize_read,
@@ -121,6 +125,7 @@ static const struct aspeed_smc_info spi_2500_info = {
 	.we0 = 16,
 	.ctl0 = 0x10,
 	.timing = 0x94,
+	.hclk_mask = 0xfffff0ff,
 	.hdiv_max = 1,
 	.set_4b = aspeed_smc_chip_set_4b,
 	.optimize_read = aspeed_smc_optimize_read,
@@ -1058,7 +1063,7 @@ static int aspeed_smc_optimize_read(struct aspeed_smc_chip *chip,
 	memcpy_fromio(golden_buf, chip->ahb_base, CALIBRATE_BUF_SIZE);
 
 	/* Establish our read mode with freq field set to 0 (HCLK/16) */
-	chip->ctl_val[smc_read] = save_read_val & 0xfffff0ff;
+	chip->ctl_val[smc_read] = save_read_val & info->hclk_mask;
 
 	/* Check if calibration data is suitable */
 	if (!aspeed_smc_check_calib_data(golden_buf, CALIBRATE_BUF_SIZE)) {
-- 
2.21.0


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04 11:59 [PATCH 00/16] mtd: spi-nor: aspeed: AST2600 support and extensions Cédric Le Goater
2019-10-04 11:59 ` [PATCH 01/16] mtd: spi-nor: aspeed: Use command mode for reads Cédric Le Goater
2019-10-04 11:59 ` [PATCH 02/16] mtd: spi-nor: aspeed: Add support for SPI dual IO read mode Cédric Le Goater
2019-10-04 11:59 ` [PATCH 03/16] mtd: spi-nor: aspeed: Link controller with the ahb clock Cédric Le Goater
2019-10-04 11:59 ` [PATCH 04/16] mtd: spi-nor: aspeed: Add read training Cédric Le Goater
2019-10-11 12:28   ` Boris Brezillon
2019-10-11 13:13     ` Vignesh Raghavendra
2019-10-11 14:03       ` Cédric Le Goater
2019-10-11 13:55     ` Cédric Le Goater
2019-10-11 14:29       ` Boris Brezillon
2019-10-11 14:37         ` Cédric Le Goater
2019-10-04 11:59 ` [PATCH 05/16] mtd: spi-nor: aspeed: Limit the maximum SPI frequency Cédric Le Goater
2019-10-04 11:59 ` [PATCH 06/16] mtd: spi-nor: fix options for mx66l51235f Cédric Le Goater
2019-10-04 16:23   ` Cédric Le Goater
2019-10-04 11:59 ` [PATCH 07/16] mtd: spi-nor: aspeed: Add support for the 4B opcodes Cédric Le Goater
2019-10-04 11:59 ` [PATCH 08/16] mtd: spi-nor: Add support for w25q512jv Cédric Le Goater
2019-10-04 11:59 ` [PATCH 09/16] mtd: spi-nor: aspeed: Introduce a field for the AHB physical address Cédric Le Goater
2019-10-04 11:59 ` [PATCH 10/16] mtd: spi-nor: aspeed: Introduce segment operations Cédric Le Goater
2019-10-04 11:59 ` [PATCH 11/16] dt-bindings: mtd: aspeed-smc: Add new comptatible for AST2600 Cédric Le Goater
2019-10-15 19:26   ` Rob Herring
2019-10-04 11:59 ` [PATCH 12/16] mtd: spi-nor: aspeed: Add initial support for the AST2600 Cédric Le Goater
2019-10-04 11:59 ` [PATCH 13/16] mtd: spi-nor: aspeed: Check for disabled segments on " Cédric Le Goater
2019-10-04 12:09 ` [PATCH 14/16] mtd: spi-nor: aspeed: Introduce training operations per platform Cédric Le Goater
2019-10-04 12:09   ` Cédric Le Goater [this message]
2019-10-04 12:09   ` [PATCH 16/16] mtd: spi-nor: aspeed: Add read training support for the AST2600 Cédric Le Goater
2019-10-09 20:55 ` [PATCH 00/16] mtd: spi-nor: aspeed: AST2600 support and extensions Boris Brezillon
2019-10-10 23:47   ` Joel Stanley
2019-10-11  6:45     ` Boris Brezillon
2019-10-11  9:29       ` Cédric Le Goater
2019-10-11  9:51         ` Boris Brezillon
2019-10-11 11:47           ` Cédric Le Goater
2019-10-11 12:07             ` Boris Brezillon
2019-10-11 13:07               ` Cédric Le Goater
2019-10-11 14:01                 ` Boris Brezillon

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191004120934.21662-2-clg@kaod.org \
    --to=clg@kaod.org \
    --cc=andrew@aj.id.au \
    --cc=computersforpeace@gmail.com \
    --cc=dwmw2@infradead.org \
    --cc=joel@jms.id.au \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-aspeed@lists.ozlabs.org \
    --cc=linux-mtd@lists.infradead.org \
    --cc=marek.vasut@gmail.com \
    --cc=mark.rutland@arm.com \
    --cc=miquel.raynal@bootlin.com \
    --cc=richard@nod.at \
    --cc=tudor.ambarus@microchip.com \
    --cc=vigneshr@ti.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-mtd Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mtd/0 linux-mtd/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-mtd linux-mtd/ https://lore.kernel.org/linux-mtd \
		linux-mtd@lists.infradead.org
	public-inbox-index linux-mtd

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-mtd


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git