diff options
| author | Mario Kicherer <dev@kicherer.org> | 2023-02-01 09:16:22 +0300 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2023-02-01 09:16:22 +0300 |
| commit | ba89878d702954d5f438df29ff1b0e0e90519db9 (patch) | |
| tree | 709319543a79772251fa59d74d0ce4431138c8c2 /arch/arm/cpu/armv7/ls102xa | |
| parent | a25dad74597824885d028e8631463295845ca9ee (diff) | |
| download | u-boot-ba89878d702954d5f438df29ff1b0e0e90519db9.tar.xz | |
armv7: ls102xa: make QSPI clock selection optional during SoC init
To improve startup times when booting from QSPI flash, the QSPI frequency
can be configured very early in the boot process [1] to reduce loading
times of U-Boot itself. This patch adds an option to disable setting the
frequency to a default value during SoC initialization.
[1] https://www.nxp.com/docs/en/application-note/AN12279.pdf
Signed-off-by: Mario Kicherer <dev@kicherer.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/cpu/armv7/ls102xa')
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/Kconfig | 9 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/soc.c | 2 |
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index 0edcf4c5ee..3e292bf70e 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -96,4 +96,13 @@ config SYS_FSL_HAS_CCI400 config SYS_FSL_ERRATUM_A008407 bool +config SYS_FSL_QSPI_SKIP_CLKSEL + bool "Skip setting QSPI clock during SoC init" + default 0 + help + To improve startup times when booting from QSPI flash, the QSPI + frequency can be set very early in the boot process. If this option + is enabled, the QSPI frequency will not be changed by U-Boot during + SoC initialization. + endmenu diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c index 1dafa3c1b4..84d4ea3a8f 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -170,7 +170,7 @@ int arch_soc_init(void) enable_layerscape_ns_access(); #endif -#ifdef CONFIG_FSL_QSPI +#if defined(CONFIG_FSL_QSPI) && !defined(CONFIG_SYS_FSL_QSPI_SKIP_CLKSEL) out_be32(&scfg->qspi_cfg, SCFG_QSPI_CLKSEL); #endif |