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From: Pratyush Yadav <p.yadav@ti.com>
To: u-boot@lists.denx.de
Subject: [PATCH v8 08/28] arm: mvebu: x530: Use tiny SPI NOR
Date: Fri, 2 Apr 2021 01:01:13 +0530	[thread overview]
Message-ID: <20210401193133.18129-9-p.yadav@ti.com> (raw)
In-Reply-To: <20210401193133.18129-1-p.yadav@ti.com>

The SPI NOR core will get Octal DTR in following commits. This has
presented a significant challenge of keeping the SPL size in check on
the x530 platform.

On a previous iteration of the series, adding a set of compile-time
switches got the build working. But rebasing on the latest master breaks
the build again. We are fighting a losing battle here. Every addition to
either the SPI NOR core in the future, or any other core part of U-Boot
will potentially lead to the SPL size going beyond the limit and the
build failing.

To combat this we will have to keep adding more and more compile-time
switches, increasing the complexity of the code in the process. This is
not sustainable. So use tiny SPI NOR instead. It is designed with
size-limited SPL binaries in mind, and will afford us more breathing
room.

To enable tiny SPI NOR, CONFIG_SPI_FLASH_BAR has to be disabled.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
 configs/x530_defconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/configs/x530_defconfig b/configs/x530_defconfig
index 890c94b5c1..0570dbe9ea 100644
--- a/configs/x530_defconfig
+++ b/configs/x530_defconfig
@@ -62,7 +62,6 @@ CONFIG_SYS_NAND_USE_FLASH_BBT=y
 CONFIG_NAND_PXA3XX=y
 CONFIG_SF_DEFAULT_BUS=1
 CONFIG_SF_DEFAULT_SPEED=50000000
-CONFIG_SPI_FLASH_BAR=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_SST=y
-- 
2.30.0

  parent reply	other threads:[~2021-04-01 19:31 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-01 19:31 [PATCH v8 00/28] mtd: spi-nor-core: add xSPI Octal DTR support Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 01/28] spi: spi-mem: allow specifying whether an op is DTR or not Pratyush Yadav
2021-04-02 22:21   ` Sean Anderson
2021-04-05  8:25     ` Pratyush Yadav
2021-04-05 11:47       ` Tom Rini
2021-04-05 13:12         ` Sean Anderson
2021-04-05 13:57           ` Pratyush Yadav
2021-04-05 14:58             ` Tom Rini
2021-04-01 19:31 ` [PATCH v8 02/28] spi: spi-mem: allow specifying a command's extension Pratyush Yadav
2021-04-02 22:29   ` Sean Anderson
2021-04-05  8:18     ` Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 03/28] spi: spi-mem: export spi_mem_default_supports_op() Pratyush Yadav
2021-04-02 22:09   ` Sean Anderson
2021-04-01 19:31 ` [PATCH v8 04/28] spi: spi-mem: add spi_mem_dtr_supports_op() Pratyush Yadav
2021-04-02 22:31   ` Sean Anderson
2021-04-05  7:40     ` Pratyush Yadav
2021-04-05 13:16       ` Sean Anderson
2021-04-01 19:31 ` [PATCH v8 05/28] spi: cadence-qspi: Do not calibrate when device tree sets read delay Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 06/28] spi: cadence-qspi: Add a small delay before indirect writes Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 07/28] spi: cadence-qspi: Add support for octal DTR flashes Pratyush Yadav
2021-04-01 19:31 ` Pratyush Yadav [this message]
2021-04-01 19:31 ` [PATCH v8 09/28] mtd: spi-nor-core: Fix address width on flash chips > 16MB Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 10/28] mtd: spi-nor-core: Add a ->setup() hook Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 11/28] mtd: spi-nor-core: Move SFDP related declarations to top Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 12/28] mtd: spi-nor-core: Introduce flash-specific fixup hooks Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 13/28] mtd: spi-nor-core: Rework hwcaps selection Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 14/28] mtd: spi-nor-core: Do not set data direction when there is no data Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 15/28] mtd: spi-nor-core: Add support for DTR protocol Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 16/28] mtd: spi-nor-core: prepare BFPT parsing for JESD216 rev D Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 17/28] mtd: spi-nor-core: Get command opcode extension type from BFPT Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 18/28] mtd: spi-nor-core: Parse xSPI Profile 1.0 table Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 19/28] mtd: spi-nor-core: Prepare Read SR and FSR for Octal DTR mode Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 20/28] mtd: spi-nor-core: Enable octal DTR mode when possible Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 21/28] mtd: spi-nor-core: Do not make invalid quad enable fatal Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 22/28] mtd: spi-nor-core: Detect Soft Reset sequence support from BFPT Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 23/28] mtd: spi-nor-core: Perform a Soft Reset on shutdown Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 24/28] mtd: spi-nor-core: Perform a Soft Reset on boot Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 25/28] mtd: spi-nor-core: allow truncated erases Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 26/28] mtd: spi-nor-core: Add non-uniform erase for Spansion/Cypress Pratyush Yadav
2021-04-06  1:48   ` Takahiro Kuwano
2021-04-06 10:46     ` Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 27/28] mtd: spi-nor-core: Add support for Cypress Semper flash Pratyush Yadav
2021-04-01 19:31 ` [PATCH v8 28/28] mtd: spi-nor-core: Allow using Micron mt35xu512aba in Octal DTR mode Pratyush Yadav
2021-04-02 22:28 ` [PATCH v8 00/28] mtd: spi-nor-core: add xSPI Octal DTR support Sean Anderson
2021-04-05  7:43   ` Pratyush Yadav
2021-04-05 13:17     ` Sean Anderson

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