imx: reorganize IMX code as other SOCs

Change is consistent with other SOCs and it is in preparation
for adding SOMs. SOC's related files are moved from cpu/ to
mach-imx/<SOC>.

This change is also coherent with the structure in kernel.

Signed-off-by: Stefano Babic <sbabic@denx.de>

CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Akshay Bhat <akshaybhat@timesys.com>
CC: Ken Lin <Ken.Lin@advantech.com.tw>
CC: Marek Vasut <marek.vasut@gmail.com>
CC: Heiko Schocher <hs@denx.de>
CC: "Sébastien Szymanski" <sebastien.szymanski@armadeus.com>
CC: Christian Gmeiner <christian.gmeiner@gmail.com>
CC: Stefan Roese <sr@denx.de>
CC: Patrick Bruenn <p.bruenn@beckhoff.com>
CC: Troy Kisky <troy.kisky@boundarydevices.com>
CC: Nikita Kiryanov <nikita@compulab.co.il>
CC: Otavio Salvador <otavio@ossystems.com.br>
CC: "Eric Bénard" <eric@eukrea.com>
CC: Jagan Teki <jagan@amarulasolutions.com>
CC: Ye Li <ye.li@nxp.com>
CC: Peng Fan <peng.fan@nxp.com>
CC: Adrian Alonso <adrian.alonso@nxp.com>
CC: Alison Wang <b18965@freescale.com>
CC: Tim Harvey <tharvey@gateworks.com>
CC: Martin Donnelly <martin.donnelly@ge.com>
CC: Marcin Niestroj <m.niestroj@grinn-global.com>
CC: Lukasz Majewski <lukma@denx.de>
CC: Adam Ford <aford173@gmail.com>
CC: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
CC: Boris Brezillon <boris.brezillon@free-electrons.com>
CC: Soeren Moch <smoch@web.de>
CC: Richard Hu <richard.hu@technexion.com>
CC: Wig Cheng <wig.cheng@technexion.com>
CC: Vanessa Maegima <vanessa.maegima@nxp.com>
CC: Max Krummenacher <max.krummenacher@toradex.com>
CC: Stefan Agner <stefan.agner@toradex.com>
CC: Markus Niebel <Markus.Niebel@tq-group.com>
CC: Breno Lima <breno.lima@nxp.com>
CC: Francesco Montefoschi <francesco.montefoschi@udoo.org>
CC: Jaehoon Chung <jh80.chung@samsung.com>
CC: Scott Wood <oss@buserror.net>
CC: Joe Hershberger <joe.hershberger@ni.com>
CC: Anatolij Gustschin <agust@denx.de>
CC: Simon Glass <sjg@chromium.org>
CC: "Andrew F. Davis" <afd@ti.com>
CC: "Łukasz Majewski" <l.majewski@samsung.com>
CC: Patrice Chotard <patrice.chotard@st.com>
CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Hans de Goede <hdegoede@redhat.com>
CC: Masahiro Yamada <yamada.masahiro@socionext.com>
CC: Stephen Warren <swarren@nvidia.com>
CC: Andre Przywara <andre.przywara@arm.com>
CC: "Álvaro Fernández Rojas" <noltari@gmail.com>
CC: York Sun <york.sun@nxp.com>
CC: Xiaoliang Yang <xiaoliang.yang@nxp.com>
CC: Chen-Yu Tsai <wens@csie.org>
CC: George McCollister <george.mccollister@gmail.com>
CC: Sven Ebenfeld <sven.ebenfeld@gmail.com>
CC: Filip Brozovic <fbrozovic@gmail.com>
CC: Petr Kulhavy <brain@jikos.cz>
CC: Eric Nelson <eric@nelint.com>
CC: Bai Ping <ping.bai@nxp.com>
CC: Anson Huang <Anson.Huang@nxp.com>
CC: Sanchayan Maity <maitysanchayan@gmail.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Patrick Delaunay <patrick.delaunay@st.com>
CC: Gary Bisson <gary.bisson@boundarydevices.com>
CC: Alexander Graf <agraf@suse.de>
CC: u-boot@lists.denx.de
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

1 files changed, 237 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/ddrmc-vf610.c b/arch/arm/mach-imx/ddrmc-vf610.c
new file mode 100644
index 0000000000..9bc56f6ac1
--- /dev/null
+++ b/arch/arm/mach-imx/ddrmc-vf610.c
@@ -0,0 +1,237 @@
+/*
+ * Copyright 2015 Toradex, Inc.
+ *
+ * Based on vf610twr:
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-vf610.h>
+#include <asm/arch/ddrmc-vf610.h>
+
+void ddrmc_setup_iomux(const iomux_v3_cfg_t *pads, int pads_count)
+{
+	static const iomux_v3_cfg_t default_pads[] = {
+		VF610_PAD_DDR_A15__DDR_A_15,
+		VF610_PAD_DDR_A14__DDR_A_14,
+		VF610_PAD_DDR_A13__DDR_A_13,
+		VF610_PAD_DDR_A12__DDR_A_12,
+		VF610_PAD_DDR_A11__DDR_A_11,
+		VF610_PAD_DDR_A10__DDR_A_10,
+		VF610_PAD_DDR_A9__DDR_A_9,
+		VF610_PAD_DDR_A8__DDR_A_8,
+		VF610_PAD_DDR_A7__DDR_A_7,
+		VF610_PAD_DDR_A6__DDR_A_6,
+		VF610_PAD_DDR_A5__DDR_A_5,
+		VF610_PAD_DDR_A4__DDR_A_4,
+		VF610_PAD_DDR_A3__DDR_A_3,
+		VF610_PAD_DDR_A2__DDR_A_2,
+		VF610_PAD_DDR_A1__DDR_A_1,
+		VF610_PAD_DDR_A0__DDR_A_0,
+		VF610_PAD_DDR_BA2__DDR_BA_2,
+		VF610_PAD_DDR_BA1__DDR_BA_1,
+		VF610_PAD_DDR_BA0__DDR_BA_0,
+		VF610_PAD_DDR_CAS__DDR_CAS_B,
+		VF610_PAD_DDR_CKE__DDR_CKE_0,
+		VF610_PAD_DDR_CLK__DDR_CLK_0,
+		VF610_PAD_DDR_CS__DDR_CS_B_0,
+		VF610_PAD_DDR_D15__DDR_D_15,
+		VF610_PAD_DDR_D14__DDR_D_14,
+		VF610_PAD_DDR_D13__DDR_D_13,
+		VF610_PAD_DDR_D12__DDR_D_12,
+		VF610_PAD_DDR_D11__DDR_D_11,
+		VF610_PAD_DDR_D10__DDR_D_10,
+		VF610_PAD_DDR_D9__DDR_D_9,
+		VF610_PAD_DDR_D8__DDR_D_8,
+		VF610_PAD_DDR_D7__DDR_D_7,
+		VF610_PAD_DDR_D6__DDR_D_6,
+		VF610_PAD_DDR_D5__DDR_D_5,
+		VF610_PAD_DDR_D4__DDR_D_4,
+		VF610_PAD_DDR_D3__DDR_D_3,
+		VF610_PAD_DDR_D2__DDR_D_2,
+		VF610_PAD_DDR_D1__DDR_D_1,
+		VF610_PAD_DDR_D0__DDR_D_0,
+		VF610_PAD_DDR_DQM1__DDR_DQM_1,
+		VF610_PAD_DDR_DQM0__DDR_DQM_0,
+		VF610_PAD_DDR_DQS1__DDR_DQS_1,
+		VF610_PAD_DDR_DQS0__DDR_DQS_0,
+		VF610_PAD_DDR_RAS__DDR_RAS_B,
+		VF610_PAD_DDR_WE__DDR_WE_B,
+		VF610_PAD_DDR_ODT1__DDR_ODT_0,
+		VF610_PAD_DDR_ODT0__DDR_ODT_1,
+		VF610_PAD_DDR_RESETB,
+	};
+
+	if ((pads == NULL) || (pads_count == 0)) {
+		pads = default_pads;
+		pads_count = ARRAY_SIZE(default_pads);
+	}
+
+	imx_iomux_v3_setup_multiple_pads(pads, pads_count);
+}
+
+static struct ddrmc_phy_setting default_phy_settings[] = {
+	{ DDRMC_PHY_DQ_TIMING,  0 },
+	{ DDRMC_PHY_DQ_TIMING, 16 },
+	{ DDRMC_PHY_DQ_TIMING, 32 },
+
+	{ DDRMC_PHY_DQS_TIMING,  1 },
+	{ DDRMC_PHY_DQS_TIMING, 17 },
+
+	{ DDRMC_PHY_CTRL,  2 },
+	{ DDRMC_PHY_CTRL, 18 },
+	{ DDRMC_PHY_CTRL, 34 },
+
+	{ DDRMC_PHY_MASTER_CTRL,  3 },
+	{ DDRMC_PHY_MASTER_CTRL, 19 },
+	{ DDRMC_PHY_MASTER_CTRL, 35 },
+
+	{ DDRMC_PHY_SLAVE_CTRL,  4 },
+	{ DDRMC_PHY_SLAVE_CTRL, 20 },
+	{ DDRMC_PHY_SLAVE_CTRL, 36 },
+
+	/* LPDDR2 only parameter */
+	{ DDRMC_PHY_OFF, 49 },
+
+	{ DDRMC_PHY50_DDR3_MODE | DDRMC_PHY50_EN_SW_HALF_CYCLE, 50 },
+
+	/* Processor Pad ODT settings */
+	{ DDRMC_PHY_PROC_PAD_ODT, 52 },
+
+	/* end marker */
+	{ 0, -1 }
+};
+
+void ddrmc_ctrl_init_ddr3(struct ddr3_jedec_timings const *timings,
+			  struct ddrmc_cr_setting *board_cr_settings,
+			  struct ddrmc_phy_setting *board_phy_settings,
+			  int col_diff, int row_diff)
+{
+	struct ddrmr_regs *ddrmr = (struct ddrmr_regs *)DDR_BASE_ADDR;
+	struct ddrmc_cr_setting *cr_setting;
+	struct ddrmc_phy_setting *phy_setting;
+
+	writel(DDRMC_CR00_DRAM_CLASS_DDR3, &ddrmr->cr[0]);
+	writel(DDRMC_CR02_DRAM_TINIT(timings->tinit), &ddrmr->cr[2]);
+	writel(DDRMC_CR10_TRST_PWRON(timings->trst_pwron), &ddrmr->cr[10]);
+
+	writel(DDRMC_CR11_CKE_INACTIVE(timings->cke_inactive), &ddrmr->cr[11]);
+	writel(DDRMC_CR12_WRLAT(timings->wrlat) |
+		   DDRMC_CR12_CASLAT_LIN(timings->caslat_lin), &ddrmr->cr[12]);
+	writel(DDRMC_CR13_TRC(timings->trc) | DDRMC_CR13_TRRD(timings->trrd) |
+		   DDRMC_CR13_TCCD(timings->tccd) |
+		   DDRMC_CR13_TBST_INT_INTERVAL(timings->tbst_int_interval),
+		   &ddrmr->cr[13]);
+	writel(DDRMC_CR14_TFAW(timings->tfaw) | DDRMC_CR14_TRP(timings->trp) |
+		   DDRMC_CR14_TWTR(timings->twtr) |
+		   DDRMC_CR14_TRAS_MIN(timings->tras_min), &ddrmr->cr[14]);
+	writel(DDRMC_CR16_TMRD(timings->tmrd) |
+		   DDRMC_CR16_TRTP(timings->trtp), &ddrmr->cr[16]);
+	writel(DDRMC_CR17_TRAS_MAX(timings->tras_max) |
+		   DDRMC_CR17_TMOD(timings->tmod), &ddrmr->cr[17]);
+	writel(DDRMC_CR18_TCKESR(timings->tckesr) |
+		   DDRMC_CR18_TCKE(timings->tcke), &ddrmr->cr[18]);
+
+	writel(DDRMC_CR20_AP_EN, &ddrmr->cr[20]);
+	writel(DDRMC_CR21_TRCD_INT(timings->trcd_int) | DDRMC_CR21_CCMAP_EN |
+		   DDRMC_CR21_TRAS_LOCKOUT(timings->tras_lockout),
+		   &ddrmr->cr[21]);
+
+	writel(DDRMC_CR22_TDAL(timings->tdal), &ddrmr->cr[22]);
+	writel(DDRMC_CR23_BSTLEN(timings->bstlen) |
+		   DDRMC_CR23_TDLL(timings->tdll), &ddrmr->cr[23]);
+	writel(DDRMC_CR24_TRP_AB(timings->trp_ab), &ddrmr->cr[24]);
+
+	writel(DDRMC_CR25_TREF_EN, &ddrmr->cr[25]);
+	writel(DDRMC_CR26_TREF(timings->tref) |
+		   DDRMC_CR26_TRFC(timings->trfc), &ddrmr->cr[26]);
+	writel(DDRMC_CR28_TREF_INT(timings->tref_int), &ddrmr->cr[28]);
+	writel(DDRMC_CR29_TPDEX(timings->tpdex), &ddrmr->cr[29]);
+
+	writel(DDRMC_CR30_TXPDLL(timings->txpdll), &ddrmr->cr[30]);
+	writel(DDRMC_CR31_TXSNR(timings->txsnr) |
+		   DDRMC_CR31_TXSR(timings->txsr), &ddrmr->cr[31]);
+	writel(DDRMC_CR33_EN_QK_SREF, &ddrmr->cr[33]);
+	writel(DDRMC_CR34_CKSRX(timings->cksrx) |
+		   DDRMC_CR34_CKSRE(timings->cksre), &ddrmr->cr[34]);
+
+	writel(DDRMC_CR38_FREQ_CHG_EN(timings->freq_chg_en), &ddrmr->cr[38]);
+	writel(DDRMC_CR39_PHY_INI_COM(1024) | DDRMC_CR39_PHY_INI_STA(16) |
+		   DDRMC_CR39_FRQ_CH_DLLOFF(2), &ddrmr->cr[39]);
+
+	writel(DDRMC_CR41_PHY_INI_STRT_INI_DIS, &ddrmr->cr[41]);
+	writel(DDRMC_CR48_MR1_DA_0(70) |
+		   DDRMC_CR48_MR0_DA_0(1056), &ddrmr->cr[48]);
+
+	writel(DDRMC_CR66_ZQCL(timings->zqcl) |
+		   DDRMC_CR66_ZQINIT(timings->zqinit), &ddrmr->cr[66]);
+	writel(DDRMC_CR67_ZQCS(timings->zqcs), &ddrmr->cr[67]);
+	writel(DDRMC_CR69_ZQ_ON_SREF_EX(2), &ddrmr->cr[69]);
+
+	writel(DDRMC_CR70_REF_PER_ZQ(timings->ref_per_zq), &ddrmr->cr[70]);
+	writel(DDRMC_CR72_ZQCS_ROTATE(timings->zqcs_rotate), &ddrmr->cr[72]);
+
+	writel(DDRMC_CR73_APREBIT(timings->aprebit) |
+		   DDRMC_CR73_COL_DIFF(col_diff) |
+		   DDRMC_CR73_ROW_DIFF(row_diff), &ddrmr->cr[73]);
+	writel(DDRMC_CR74_BANKSPLT_EN | DDRMC_CR74_ADDR_CMP_EN |
+		   DDRMC_CR74_CMD_AGE_CNT(timings->cmd_age_cnt) |
+		   DDRMC_CR74_AGE_CNT(timings->age_cnt),
+		   &ddrmr->cr[74]);
+	writel(DDRMC_CR75_RW_PG_EN | DDRMC_CR75_RW_EN | DDRMC_CR75_PRI_EN |
+		   DDRMC_CR75_PLEN, &ddrmr->cr[75]);
+	writel(DDRMC_CR76_NQENT_ACTDIS(3) | DDRMC_CR76_D_RW_G_BKCN(3) |
+		   DDRMC_CR76_W2R_SPLT_EN, &ddrmr->cr[76]);
+	writel(DDRMC_CR77_CS_MAP | DDRMC_CR77_DI_RD_INTLEAVE |
+		   DDRMC_CR77_SWAP_EN, &ddrmr->cr[77]);
+	writel(DDRMC_CR78_Q_FULLNESS(timings->q_fullness) |
+		   DDRMC_CR78_BUR_ON_FLY_BIT(12), &ddrmr->cr[78]);
+	writel(DDRMC_CR79_CTLUPD_AREF(0), &ddrmr->cr[79]);
+
+	writel(DDRMC_CR82_INT_MASK, &ddrmr->cr[82]);
+
+	writel(DDRMC_CR87_ODT_RD_MAPCS0(timings->odt_rd_mapcs0) |
+		   DDRMC_CR87_ODT_WR_MAPCS0(timings->odt_wr_mapcs0),
+		   &ddrmr->cr[87]);
+	writel(DDRMC_CR88_TODTL_CMD(4), &ddrmr->cr[88]);
+	writel(DDRMC_CR89_AODT_RWSMCS(2), &ddrmr->cr[89]);
+
+	writel(DDRMC_CR91_R2W_SMCSDL(2), &ddrmr->cr[91]);
+	writel(DDRMC_CR96_WLMRD(timings->wlmrd) |
+		   DDRMC_CR96_WLDQSEN(timings->wldqsen), &ddrmr->cr[96]);
+
+	/* execute custom CR setting sequence (may be NULL) */
+	cr_setting = board_cr_settings;
+	if (cr_setting != NULL)
+		while (cr_setting->cr_rnum >= 0) {
+			writel(cr_setting->setting,
+			       &ddrmr->cr[cr_setting->cr_rnum]);
+			cr_setting++;
+		}
+
+	/* perform default PHY settings (may be overridden by custom settings */
+	phy_setting = default_phy_settings;
+	while (phy_setting->phy_rnum >= 0) {
+		writel(phy_setting->setting,
+		       &ddrmr->phy[phy_setting->phy_rnum]);
+		phy_setting++;
+	}
+
+	/* execute custom PHY setting sequence (may be NULL) */
+	phy_setting = board_phy_settings;
+	if (phy_setting != NULL)
+		while (phy_setting->phy_rnum >= 0) {
+			writel(phy_setting->setting,
+			       &ddrmr->phy[phy_setting->phy_rnum]);
+			phy_setting++;
+		}
+
+	/* all inits done, start the DDR controller */
+	writel(DDRMC_CR00_DRAM_CLASS_DDR3 | DDRMC_CR00_START, &ddrmr->cr[0]);
+
+	while (!(readl(&ddrmr->cr[80]) && 0x100))
+		udelay(10);
+}