diff options
| author | Jagan Teki <jagan@amarulasolutions.com> | 2019-07-16 17:27:24 +0530 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2019-07-20 23:59:44 +0800 |
| commit | f288d54936d7360e934132a128d7e92d3b1c95a0 (patch) | |
| tree | 45e1bf51b45e76cb67291b25057d41ae920f4188 /drivers | |
| parent | aa30aae8b4e8c871a263ad67c4b4fdca236bf7c1 (diff) | |
ram: rk3399: Configure soc odt support
CTL 145, 146, 159, 160 registers are used to configure
soc odt on rk3399.
These soc odt values are updated from CS0_MR22_VAL and
CS1_MR22_VAL and for lpddr4 these values ORed with
tsel_rd_select_n.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ram/rockchip/sdram_rk3399.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index d958e9ddf7..7ef7707a03 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -40,6 +40,8 @@ #define PHY_SLEWP_EN 0x1 #define PHY_SLEWN_EN 0x1 #define PHY_RX_CM_INPUT 0x1 +#define CS0_MR22_VAL 0 +#define CS1_MR22_VAL 3 #define CRU_SFTRST_DDR_CTRL(ch, n) ((0x1 << (8 + 16 + (ch) * 4)) | \ ((n) << (8 + (ch) * 4))) @@ -554,7 +556,7 @@ static void set_ds_odt(const struct chan_info *chan, const struct rk3399_sdram_params *params, u32 mr5) { u32 *denali_phy = chan->publ->denali_phy; - + u32 *denali_ctl = chan->pctl->denali_ctl; u32 tsel_idle_en, tsel_wr_en, tsel_rd_en; u32 tsel_idle_select_p, tsel_rd_select_p; u32 tsel_idle_select_n, tsel_rd_select_n; @@ -562,6 +564,7 @@ static void set_ds_odt(const struct chan_info *chan, u32 tsel_wr_select_dq_n, tsel_wr_select_ca_n; u32 tsel_ckcs_select_p, tsel_ckcs_select_n; struct io_setting *io = NULL; + u32 soc_odt = 0; u32 reg_value; if (params->base.dramtype == LPDDR4) { @@ -581,6 +584,35 @@ static void set_ds_odt(const struct chan_info *chan, tsel_ckcs_select_p = io->wr_ckcs_drv; tsel_ckcs_select_n = PHY_DRV_ODT_34_3; + switch (tsel_rd_select_n) { + case PHY_DRV_ODT_240: + soc_odt = 1; + break; + case PHY_DRV_ODT_120: + soc_odt = 2; + break; + case PHY_DRV_ODT_80: + soc_odt = 3; + break; + case PHY_DRV_ODT_60: + soc_odt = 4; + break; + case PHY_DRV_ODT_48: + soc_odt = 5; + break; + case PHY_DRV_ODT_40: + soc_odt = 6; + break; + case PHY_DRV_ODT_34_3: + soc_odt = 6; + printf("%s: Unable to support LPDDR4 MR22 Soc ODT\n", + __func__); + break; + case PHY_DRV_ODT_HI_Z: + default: + soc_odt = 0; + break; + } } else if (params->base.dramtype == LPDDR3) { tsel_rd_select_p = PHY_DRV_ODT_240; tsel_rd_select_n = PHY_DRV_ODT_HI_Z; @@ -621,6 +653,21 @@ static void set_ds_odt(const struct chan_info *chan, tsel_wr_en = 0; tsel_idle_en = 0; + /* F0_0 */ + clrsetbits_le32(&denali_ctl[145], 0xFF << 16, + (soc_odt | (CS0_MR22_VAL << 3)) << 16); + /* F2_0, F1_0 */ + clrsetbits_le32(&denali_ctl[146], 0xFF00FF, + ((soc_odt | (CS0_MR22_VAL << 3)) << 16) | + (soc_odt | (CS0_MR22_VAL << 3))); + /* F0_1 */ + clrsetbits_le32(&denali_ctl[159], 0xFF << 16, + (soc_odt | (CS1_MR22_VAL << 3)) << 16); + /* F2_1, F1_1 */ + clrsetbits_le32(&denali_ctl[160], 0xFF00FF, + ((soc_odt | (CS1_MR22_VAL << 3)) << 16) | + (soc_odt | (CS1_MR22_VAL << 3))); + /* * phy_dq_tsel_select_X 24bits DENALI_PHY_6/134/262/390 offset_0 * sets termination values for read/idle cycles and drive strength |