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authorMatt Porter <mporter@ti.com>2013-03-15 10:07:03 +0000
committerTom Rini <trini@ti.com>2013-03-24 12:49:11 -0400
commit3ba65f97cbedb39fb486f42f8daa9b9e0d36705a (patch)
tree0349f033250c48a61c82a6c3bc5bf85ad220c6c1 /arch/arm/cpu
parent81df2bab46d3bed319e21571c68db8e0a048bbfd (diff)
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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')
-rw-r--r--arch/arm/cpu/armv7/am33xx/ddr.c107
-rw-r--r--arch/arm/cpu/armv7/am33xx/emif4.c40
2 files changed, 85 insertions, 62 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/ddr.c b/arch/arm/cpu/armv7/am33xx/ddr.c
index 7932a39..d1e2fd3 100644
--- a/arch/arm/cpu/armv7/am33xx/ddr.c
+++ b/arch/arm/cpu/armv7/am33xx/ddr.c
@@ -24,15 +24,20 @@ http://www.ti.com/
/**
* Base address for EMIF instances
*/
-static struct emif_reg_struct *emif_reg = {
- (struct emif_reg_struct *)EMIF4_0_CFG_BASE};
+static struct emif_reg_struct *emif_reg[2] = {
+ (struct emif_reg_struct *)EMIF4_0_CFG_BASE,
+ (struct emif_reg_struct *)EMIF4_1_CFG_BASE};
/**
- * Base address for DDR instance
+ * Base addresses for DDR PHY cmd/data regs
*/
-static struct ddr_regs *ddr_reg[2] = {
- (struct ddr_regs *)DDR_PHY_BASE_ADDR,
- (struct ddr_regs *)DDR_PHY_BASE_ADDR2};
+static struct ddr_cmd_regs *ddr_cmd_reg[2] = {
+ (struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR,
+ (struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR2};
+
+static struct ddr_data_regs *ddr_data_reg[2] = {
+ (struct ddr_data_regs *)DDR_PHY_DATA_ADDR,
+ (struct ddr_data_regs *)DDR_PHY_DATA_ADDR2};
/**
* Base address for ddr io control instances
@@ -43,7 +48,7 @@ static struct ddr_cmdtctrl *ioctrl_reg = {
/**
* Configure SDRAM
*/
-void config_sdram(const struct emif_regs *regs)
+void config_sdram(const struct emif_regs *regs, int nr)
{
if (regs->zq_config) {
/*
@@ -51,71 +56,85 @@ void config_sdram(const struct emif_regs *regs)
* about 570us for a delay, which will be long enough
* to configure things.
*/
- writel(0x2800, &emif_reg->emif_sdram_ref_ctrl);
- writel(regs->zq_config, &emif_reg->emif_zq_config);
+ writel(0x2800, &emif_reg[nr]->emif_sdram_ref_ctrl);
+ writel(regs->zq_config, &emif_reg[nr]->emif_zq_config);
writel(regs->sdram_config, &cstat->secure_emif_sdram_config);
- writel(regs->sdram_config, &emif_reg->emif_sdram_config);
- writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl);
- writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl_shdw);
+ writel(regs->sdram_config, &emif_reg[nr]->emif_sdram_config);
+ writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl);
+ writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl_shdw);
}
- writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl);
- writel(regs->ref_ctrl, &emif_reg->emif_sdram_ref_ctrl_shdw);
- writel(regs->sdram_config, &emif_reg->emif_sdram_config);
+ writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl);
+ writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl_shdw);
+ writel(regs->sdram_config, &emif_reg[nr]->emif_sdram_config);
}
/**
* Set SDRAM timings
*/
-void set_sdram_timings(const struct emif_regs *regs)
+void set_sdram_timings(const struct emif_regs *regs, int nr)
{
- writel(regs->sdram_tim1, &emif_reg->emif_sdram_tim_1);
- writel(regs->sdram_tim1, &emif_reg->emif_sdram_tim_1_shdw);
- writel(regs->sdram_tim2, &emif_reg->emif_sdram_tim_2);
- writel(regs->sdram_tim2, &emif_reg->emif_sdram_tim_2_shdw);
- writel(regs->sdram_tim3, &emif_reg->emif_sdram_tim_3);
- writel(regs->sdram_tim3, &emif_reg->emif_sdram_tim_3_shdw);
+ writel(regs->sdram_tim1, &emif_reg[nr]->emif_sdram_tim_1);
+ writel(regs->sdram_tim1, &emif_reg[nr]->emif_sdram_tim_1_shdw);
+ writel(regs->sdram_tim2, &emif_reg[nr]->emif_sdram_tim_2);
+ writel(regs->sdram_tim2, &emif_reg[nr]->emif_sdram_tim_2_shdw);
+ writel(regs->sdram_tim3, &emif_reg[nr]->emif_sdram_tim_3);
+ writel(regs->sdram_tim3, &emif_reg[nr]->emif_sdram_tim_3_shdw);
}
/**
* Configure DDR PHY
*/
-void config_ddr_phy(const struct emif_regs *regs)
+void config_ddr_phy(const struct emif_regs *regs, int nr)
{
- writel(regs->emif_ddr_phy_ctlr_1, &emif_reg->emif_ddr_phy_ctrl_1);
- writel(regs->emif_ddr_phy_ctlr_1, &emif_reg->emif_ddr_phy_ctrl_1_shdw);
+ writel(regs->emif_ddr_phy_ctlr_1,
+ &emif_reg[nr]->emif_ddr_phy_ctrl_1);
+ writel(regs->emif_ddr_phy_ctlr_1,
+ &emif_reg[nr]->emif_ddr_phy_ctrl_1_shdw);
}
/**
* Configure DDR CMD control registers
*/
-void config_cmd_ctrl(const struct cmd_control *cmd)
+void config_cmd_ctrl(const struct cmd_control *cmd, int nr)
{
- writel(cmd->cmd0csratio, &ddr_reg[0]->cm0csratio);
- writel(cmd->cmd0dldiff, &ddr_reg[0]->cm0dldiff);
- writel(cmd->cmd0iclkout, &ddr_reg[0]->cm0iclkout);
+ writel(cmd->cmd0csratio, &ddr_cmd_reg[nr]->cm0csratio);
+ writel(cmd->cmd0dldiff, &ddr_cmd_reg[nr]->cm0dldiff);
+ writel(cmd->cmd0iclkout, &ddr_cmd_reg[nr]->cm0iclkout);
- writel(cmd->cmd1csratio, &ddr_reg[0]->cm1csratio);
- writel(cmd->cmd1dldiff, &ddr_reg[0]->cm1dldiff);
- writel(cmd->cmd1iclkout, &ddr_reg[0]->cm1iclkout);
+ writel(cmd->cmd1csratio, &ddr_cmd_reg[nr]->cm1csratio);
+ writel(cmd->cmd1dldiff, &ddr_cmd_reg[nr]->cm1dldiff);
+ writel(cmd->cmd1iclkout, &ddr_cmd_reg[nr]->cm1iclkout);
- writel(cmd->cmd2csratio, &ddr_reg[0]->cm2csratio);
- writel(cmd->cmd2dldiff, &ddr_reg[0]->cm2dldiff);
- writel(cmd->cmd2iclkout, &ddr_reg[0]->cm2iclkout);
+ writel(cmd->cmd2csratio, &ddr_cmd_reg[nr]->cm2csratio);
+ writel(cmd->cmd2dldiff, &ddr_cmd_reg[nr]->cm2dldiff);
+ writel(cmd->cmd2iclkout, &ddr_cmd_reg[nr]->cm2iclkout);
}
/**
* Configure DDR DATA registers
*/
-void config_ddr_data(int macrono, const struct ddr_data *data)
+void config_ddr_data(const struct ddr_data *data, int nr)
{
- writel(data->datardsratio0, &ddr_reg[macrono]->dt0rdsratio0);
- writel(data->datawdsratio0, &ddr_reg[macrono]->dt0wdsratio0);
- writel(data->datawiratio0, &ddr_reg[macrono]->dt0wiratio0);
- writel(data->datagiratio0, &ddr_reg[macrono]->dt0giratio0);
- writel(data->datafwsratio0, &ddr_reg[macrono]->dt0fwsratio0);
- writel(data->datawrsratio0, &ddr_reg[macrono]->dt0wrsratio0);
- writel(data->datauserank0delay, &ddr_reg[macrono]->dt0rdelays0);
- writel(data->datadldiff0, &ddr_reg[macrono]->dt0dldiff0);
+ int i;
+
+ for (i = 0; i < DDR_DATA_REGS_NR; i++) {
+ writel(data->datardsratio0,
+ &(ddr_data_reg[nr]+i)->dt0rdsratio0);
+ writel(data->datawdsratio0,
+ &(ddr_data_reg[nr]+i)->dt0wdsratio0);
+ writel(data->datawiratio0,
+ &(ddr_data_reg[nr]+i)->dt0wiratio0);
+ writel(data->datagiratio0,
+ &(ddr_data_reg[nr]+i)->dt0giratio0);
+ writel(data->datafwsratio0,
+ &(ddr_data_reg[nr]+i)->dt0fwsratio0);
+ writel(data->datawrsratio0,
+ &(ddr_data_reg[nr]+i)->dt0wrsratio0);
+ writel(data->datauserank0delay,
+ &(ddr_data_reg[nr]+i)->dt0rdelays0);
+ writel(data->datadldiff0,
+ &(ddr_data_reg[nr]+i)->dt0dldiff0);
+ }
}
void config_io_ctrl(unsigned long val)
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index 01e3a52..76459d8 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