diff options
| author | Matt Porter <mporter@ti.com> | 2013-03-15 10:07:03 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-03-24 12:49:11 -0400 |
| commit | 3ba65f97cbedb39fb486f42f8daa9b9e0d36705a (patch) | |
| tree | 0349f033250c48a61c82a6c3bc5bf85ad220c6c1 /arch/arm/cpu/armv7/am33xx/emif4.c | |
| parent | 81df2bab46d3bed319e21571c68db8e0a048bbfd (diff) | |
| download | talos-obmc-uboot-3ba65f97cbedb39fb486f42f8daa9b9e0d36705a.tar.gz talos-obmc-uboot-3ba65f97cbedb39fb486f42f8daa9b9e0d36705a.zip | |
am33xx: refactor emif4/ddr to support multiple EMIF instances
The AM33xx emif4/ddr support closely matches what is need to support
TI814x except that TI814x has two EMIF instances. Refactor all the
emif4 helper calls and the config_ddr() init function to use an
additional instance number argument.
Signed-off-by: Matt Porter <mporter@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/emif4.c')
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/emif4.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c index 01e3a5204e..76459d81f9 100644 --- a/arch/arm/cpu/armv7/am33xx/emif4.c +++ b/arch/arm/cpu/armv7/am33xx/emif4.c @@ -44,44 +44,48 @@ void dram_init_banksize(void) #ifdef CONFIG_SPL_BUILD -static struct vtp_reg *vtpreg = (struct vtp_reg *)VTP0_CTRL_ADDR; +static struct vtp_reg *vtpreg[2] = { + (struct vtp_reg *)VTP0_CTRL_ADDR, + (struct vtp_reg *)VTP1_CTRL_ADDR}; +#ifdef CONFIG_AM33XX static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR; +#endif -static void config_vtp(void) +static void config_vtp(int nr) { - writel(readl(&vtpreg->vtp0ctrlreg) | VTP_CTRL_ENABLE, - &vtpreg->vtp0ctrlreg); - writel(readl(&vtpreg->vtp0ctrlreg) & (~VTP_CTRL_START_EN), - &vtpreg->vtp0ctrlreg); - writel(readl(&vtpreg->vtp0ctrlreg) | VTP_CTRL_START_EN, - &vtpreg->vtp0ctrlreg); + writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_ENABLE, + &vtpreg[nr]->vtp0ctrlreg); + writel(readl(&vtpreg[nr]->vtp0ctrlreg) & (~VTP_CTRL_START_EN), + &vtpreg[nr]->vtp0ctrlreg); + writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_START_EN, + &vtpreg[nr]->vtp0ctrlreg); /* Poll for READY */ - while ((readl(&vtpreg->vtp0ctrlreg) & VTP_CTRL_READY) != + while ((readl(&vtpreg[nr]->vtp0ctrlreg) & VTP_CTRL_READY) != VTP_CTRL_READY) ; } void config_ddr(unsigned int pll, unsigned int ioctrl, const struct ddr_data *data, const struct cmd_control *ctrl, - const struct emif_regs *regs) + const struct emif_regs *regs, int nr) { enable_emif_clocks(); ddr_pll_config(pll); - config_vtp(); - config_cmd_ctrl(ctrl); - - config_ddr_data(0, data); - config_ddr_data(1, data); + config_vtp(nr); + config_cmd_ctrl(ctrl, nr); + config_ddr_data(data, nr); +#ifdef CONFIG_AM33XX config_io_ctrl(ioctrl); /* Set CKE to be controlled by EMIF/DDR PHY */ writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl); +#endif /* Program EMIF instance */ - config_ddr_phy(regs); - set_sdram_timings(regs); - config_sdram(regs); + config_ddr_phy(regs, nr); + set_sdram_timings(regs, nr); + config_sdram(regs, nr); } #endif |
