3af779eb17
This is a backport of the patches accepted to the Linux mainline related to mvebu SoC (Armada XP and Armada 370) between Linux v3.11, and Linux v3.12. This work mainly covers: * Ground work for sharing the pxa nand driver(drivers/mtd/nand/pxa3xx_nand.c) between the PXA family,and the Armada family. * Further updates to the mvebu MBus. * Work and ground work for enabling MSI on the Armada family. * some phy / mdio bus initialization related work. * Device tree binding documentation update. Signed-off-by: Seif Mazareeb <seif.mazareeb@gmail.com> CC: Luka Perkov <luka@openwrt.org> SVN-Revision: 39565
89 lines
2.7 KiB
Diff
89 lines
2.7 KiB
Diff
From 259e46e4327a9937761fd3f7bc07e208b1fa50e6 Mon Sep 17 00:00:00 2001
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From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
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Date: Sat, 10 Aug 2013 16:34:52 -0300
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Subject: [PATCH 114/203] mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand'
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compatible string
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This driver supports NFCv1 (as found in PXA SoC) and NFCv2 (as found in
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Armada 370/XP SoC). As both controller has a few differences, a way of
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distinguishing between the two is needed.
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This commit introduces a new compatible string 'marvell,armada370-nand'
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and assigns a compatible data of type enum pxa3xx_nand_variant to allow
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such distinction.
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Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
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Tested-by: Daniel Mack <zonque@gmail.com>
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Cc: devicetree@vger.kernel.org
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Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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---
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drivers/mtd/nand/pxa3xx_nand.c | 31 ++++++++++++++++++++++++++++++-
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1 file changed, 30 insertions(+), 1 deletion(-)
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--- a/drivers/mtd/nand/pxa3xx_nand.c
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+++ b/drivers/mtd/nand/pxa3xx_nand.c
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@@ -123,6 +123,11 @@ enum {
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STATE_READY,
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};
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+enum pxa3xx_nand_variant {
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+ PXA3XX_NAND_VARIANT_PXA,
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+ PXA3XX_NAND_VARIANT_ARMADA370,
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+};
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+
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struct pxa3xx_nand_host {
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struct nand_chip chip;
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struct pxa3xx_nand_cmdset *cmdset;
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@@ -171,6 +176,12 @@ struct pxa3xx_nand_info {
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struct pxa3xx_nand_host *host[NUM_CHIP_SELECT];
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unsigned int state;
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+ /*
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+ * This driver supports NFCv1 (as found in PXA SoC)
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+ * and NFCv2 (as found in Armada 370/XP SoC).
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+ */
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+ enum pxa3xx_nand_variant variant;
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+
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int cs;
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int use_ecc; /* use HW ECC ? */
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int use_dma; /* use DMA ? */
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@@ -1192,11 +1203,28 @@ static int pxa3xx_nand_remove(struct pla
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#ifdef CONFIG_OF
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static struct of_device_id pxa3xx_nand_dt_ids[] = {
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- { .compatible = "marvell,pxa3xx-nand" },
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+ {
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+ .compatible = "marvell,pxa3xx-nand",
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+ .data = (void *)PXA3XX_NAND_VARIANT_PXA,
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+ },
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+ {
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+ .compatible = "marvell,armada370-nand",
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+ .data = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
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+ },
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{}
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};
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MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
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+static enum pxa3xx_nand_variant
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+pxa3xx_nand_get_variant(struct platform_device *pdev)
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+{
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+ const struct of_device_id *of_id =
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+ of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
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+ if (!of_id)
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+ return PXA3XX_NAND_VARIANT_PXA;
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+ return (enum pxa3xx_nand_variant)of_id->data;
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+}
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+
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static int pxa3xx_nand_probe_dt(struct platform_device *pdev)
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{
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struct pxa3xx_nand_platform_data *pdata;
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@@ -1252,6 +1280,7 @@ static int pxa3xx_nand_probe(struct plat
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}
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info = platform_get_drvdata(pdev);
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+ info->variant = pxa3xx_nand_get_variant(pdev);
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probe_success = 0;
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for (cs = 0; cs < pdata->num_cs; cs++) {
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info->cs = cs;
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