linux-kernel - [PATCH net 3/4] ARM: socfpga_defconfig: Disable PHY time stamping by default.

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Message-Id: <5ba5eaabd8dd610fa6b269fc746fd98421fe22a0.1611198584.git.richardcochran@gmail.com>
Date:   Wed, 20 Jan 2021 20:06:02 -0800
From:   Richard Cochran <richardcochran@...il.com>
To:     netdev@...r.kernel.org
Cc:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Brandon Streiff <brandon.streiff@...com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Marc Zyngier <maz@...nel.org>, Olof Johansson <olof@...om.net>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net 3/4] ARM: socfpga_defconfig: Disable PHY time stamping by default.

The NETWORK_PHY_TIMESTAMPING configuration option adds overhead into
the networking stack.  When enabled, all transmitted and received
frames are subjected to extra tests to determine whether they just
might be PTP frames to be presented to esoteric PHY time stamping
drivers.

However, no System on Chip, least ways not the socfpga SoC, includes
such a PHY time stamping device.  Disable the unneeded option by
default.

The diff includes a bit of extra churn caused by "make savedefconfig",
but the generated defconfig is now in the canonical form.

Signed-off-by: Richard Cochran <richardcochran@...il.com>
---
 arch/arm/configs/socfpga_defconfig | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/arm/configs/socfpga_defconfig b/arch/arm/configs/socfpga_defconfig
index e73c97b0f5b0..5bd433028285 100644
--- a/arch/arm/configs/socfpga_defconfig
+++ b/arch/arm/configs/socfpga_defconfig
@@ -14,8 +14,6 @@ CONFIG_ARM_THUMBEE=y
 CONFIG_SMP=y
 CONFIG_NR_CPUS=2
 CONFIG_HIGHMEM=y
-CONFIG_ZBOOT_ROM_TEXT=0x0
-CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_VFP=y
 CONFIG_NEON=y
 CONFIG_OPROFILE=y
@@ -33,7 +31,6 @@ CONFIG_IP_PNP=y
 CONFIG_IP_PNP_DHCP=y
 CONFIG_IP_PNP_BOOTP=y
 CONFIG_IP_PNP_RARP=y
-CONFIG_NETWORK_PHY_TIMESTAMPING=y
 CONFIG_VLAN_8021Q=y
 CONFIG_VLAN_8021Q_GVRP=y
 CONFIG_CAN=y
@@ -48,12 +45,10 @@ CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_MTD=y
 CONFIG_MTD_BLOCK=y
-CONFIG_MTD_M25P80=y
 CONFIG_MTD_RAW_NAND=y
 CONFIG_MTD_NAND_DENALI_DT=y
 CONFIG_MTD_SPI_NOR=y
 # CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is not set
-CONFIG_SPI_CADENCE_QUADSPI=y
 CONFIG_OF_OVERLAY=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_RAM=y
@@ -89,6 +84,7 @@ CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
 CONFIG_SPI=y
+CONFIG_SPI_CADENCE_QUADSPI=y
 CONFIG_SPI_DESIGNWARE=y
 CONFIG_SPI_DW_MMIO=y
 CONFIG_SPI_SPIDEV=y
-- 
2.20.1