For LD11 and LD20 SoCs, the System Bus and NAND are multiplexed in the same I/O pins. When booting from a NAND device, pin-mux for the System Bus must not be set-up because they are exclusive with each other.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
arch/arm/mach-uniphier/init/init-ld11.c | 4 +++- arch/arm/mach-uniphier/init/init-ld20.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-uniphier/init/init-ld11.c b/arch/arm/mach-uniphier/init/init-ld11.c index e324c94..fdb2838 100644 --- a/arch/arm/mach-uniphier/init/init-ld11.c +++ b/arch/arm/mach-uniphier/init/init-ld11.c @@ -15,7 +15,9 @@ int uniphier_ld11_init(const struct uniphier_board_data *bd) { uniphier_sbc_init_savepin(bd); uniphier_pxs2_sbc_init(bd); - uniphier_pin_init("system_bus_grp"); + /* pins for NAND and System Bus are multiplexed */ + if (spl_boot_device() != BOOT_DEVICE_NAND) + uniphier_pin_init("system_bus_grp");
support_card_reset();
diff --git a/arch/arm/mach-uniphier/init/init-ld20.c b/arch/arm/mach-uniphier/init/init-ld20.c index cb05421..37b860a 100644 --- a/arch/arm/mach-uniphier/init/init-ld20.c +++ b/arch/arm/mach-uniphier/init/init-ld20.c @@ -15,7 +15,9 @@ int uniphier_ld20_init(const struct uniphier_board_data *bd) { uniphier_sbc_init_savepin(bd); uniphier_pxs2_sbc_init(bd); - uniphier_pin_init("system_bus_grp"); + /* pins for NAND and System Bus are multiplexed */ + if (spl_boot_device() != BOOT_DEVICE_NAND) + uniphier_pin_init("system_bus_grp");
support_card_reset();