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[src/trunk]: src/sys/arch Add support for Rockchip eMMC PHY
details: https://anonhg.NetBSD.org/src/rev/8ff62600f964
branches: trunk
changeset: 839878:8ff62600f964
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sun Mar 10 11:10:21 2019 +0000
description:
Add support for Rockchip eMMC PHY
diffstat:
sys/arch/arm/rockchip/files.rockchip | 7 +-
sys/arch/arm/rockchip/rk_emmcphy.c | 237 +++++++++++++++++++++++++++++++++++
sys/arch/evbarm/conf/GENERIC64 | 3 +-
3 files changed, 245 insertions(+), 2 deletions(-)
diffs (280 lines):
diff -r f5cb58ab7730 -r 8ff62600f964 sys/arch/arm/rockchip/files.rockchip
--- a/sys/arch/arm/rockchip/files.rockchip Sun Mar 10 11:09:35 2019 +0000
+++ b/sys/arch/arm/rockchip/files.rockchip Sun Mar 10 11:10:21 2019 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.rockchip,v 1.16 2019/03/07 00:35:22 jakllsch Exp $
+# $NetBSD: files.rockchip,v 1.17 2019/03/10 11:10:21 jmcneill Exp $
#
# Configuration info for Rockchip family SoCs
#
@@ -63,6 +63,11 @@
attach rkpcie at fdt
file arch/arm/rockchip/rk3399_pcie.c rkpcie
+# eMMC PHY
+device rkemmcphy
+attach rkemmcphy at fdt
+file arch/arm/rockchip/rk_emmcphy.c rkemmcphy
+
# SOC parameters
defflag opt_soc.h SOC_ROCKCHIP
defflag opt_soc.h SOC_RK3328: SOC_ROCKCHIP
diff -r f5cb58ab7730 -r 8ff62600f964 sys/arch/arm/rockchip/rk_emmcphy.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/rockchip/rk_emmcphy.c Sun Mar 10 11:10:21 2019 +0000
@@ -0,0 +1,237 @@
+/* $NetBSD: rk_emmcphy.c,v 1.1 2019/03/10 11:10:21 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2019 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: rk_emmcphy.c,v 1.1 2019/03/10 11:10:21 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/mutex.h>
+#include <sys/kmem.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#define GRF_EMMCPHY_CON0 0x00
+#define PHYCTRL_FRQSEL __BITS(13,12)
+#define PHYCTRL_FRQSEL_200M 0
+#define PHYCTRL_FRQSEL_50M 1
+#define PHYCTRL_FRQSEL_100M 2
+#define PHYCTRL_FRQSEL_150M 3
+#define PHYCTRL_OTAPDLYENA __BIT(11)
+#define PHYCTRL_OTAPDLYSEL __BITS(10,7)
+#define PHYCTRL_ITAPCHGWIN __BIT(6)
+#define PHYCTRL_ITAPDLYSEL __BITS(5,1)
+#define PHYCTRL_ITAPDLYENA __BIT(0)
+#define GRF_EMMCPHY_CON1 0x04
+#define PHYCTRL_CLKBUFSEL __BITS(8,6)
+#define PHYCTRL_SELDLYTXCLK __BIT(5)
+#define PHYCTRL_SELDLYRXCLK __BIT(4)
+#define PHYCTRL_STRBSEL __BITS(3,0)
+#define GRF_EMMCPHY_CON2 0x08
+#define PHYCTRL_REN_STRB __BIT(9)
+#define PHYCTRL_REN_CMD __BIT(8)
+#define PHYCTRL_REN_DAT __BITS(7,0)
+#define GRF_EMMCPHY_CON3 0x0c
+#define PHYCTRL_PU_STRB __BIT(9)
+#define PHYCTRL_PU_CMD __BIT(8)
+#define PHYCTRL_PU_DAT __BITS(7,0)
+#define GRF_EMMCPHY_CON4 0x10
+#define PHYCTRL_OD_RELEASE_CMD __BIT(9)
+#define PHYCTRL_OD_RELEASE_STRB __BIT(8)
+#define PHYCTRL_OD_RELEASE_DAT __BITS(7,0)
+#define GRF_EMMCPHY_CON5 0x14
+#define PHYCTRL_ODEN_STRB __BIT(9)
+#define PHYCTRL_ODEN_CMD __BIT(8)
+#define PHYCTRL_ODEN_DAT __BITS(7,0)
+#define GRF_EMMCPHY_CON6 0x18
+#define PHYCTRL_DLL_TRM_ICP __BITS(12,9)
+#define PHYCTRL_EN_RTRIM __BIT(8)
+#define PHYCTRL_RETRIM __BIT(7)
+#define PHYCTRL_DR_TY __BITS(6,4)
+#define PHYCTRL_RETENB __BIT(3)
+#define PHYCTRL_RETEN __BIT(2)
+#define PHYCTRL_ENDLL __BIT(1)
+#define PHYCTRL_PDB __BIT(0)
+#define GRF_EMMCPHY_STATUS 0x20
+#define PHYCTRL_CALDONE __BIT(6)
+#define PHYCTRL_DLLRDY __BIT(5)
+#define PHYCTRL_RTRIM __BITS(4,1)
+#define PHYCTRL_EXR_NINST __BIT(0)
+
+static const char * const compatible[] = {
+ "rockchip,rk3399-emmc-phy",
+ NULL
+};
+
+struct rk_emmcphy_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_bst;
+ bus_space_handle_t sc_bsh;
+ int sc_phandle;
+};
+
+#define RD4(sc, reg) \
+ bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
+#define WR4(sc, reg, val) \
+ bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val))
+
+static int rk_emmcphy_match(device_t, cfdata_t, void *);
+static void rk_emmcphy_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(rkemmcphy, sizeof(struct rk_emmcphy_softc),
+ rk_emmcphy_match, rk_emmcphy_attach, NULL, NULL);
+
+static void *
+rk_emmcphy_acquire(device_t dev, const void *data, size_t len)
+{
+ if (len != 0)
+ return NULL;
+
+ return device_private(dev);
+}
+
+static void
+rk_emmcphy_release(device_t dev, void *priv)
+{
+}
+
+static int
+rk_emmcphy_enable(device_t dev, void *priv, bool enable)
+{
+ struct rk_emmcphy_softc * const sc = priv;
+ const int phandle = sc->sc_phandle;
+ struct clk *clk;
+ uint32_t mask, val;
+ u_int rate, frqsel;
+
+ /* Power down PHY and disable DLL before making changes */
+ mask = PHYCTRL_ENDLL | PHYCTRL_PDB;
+ val = 0;
+ WR4(sc, GRF_EMMCPHY_CON6, (mask << 16) | val);
+
+ if (enable == false)
+ return 0;
+
+ clk = fdtbus_clock_get(phandle, "emmcclk");
+ rate = clk ? clk_get_rate(clk) : 0;
+
+ if (rate != 0) {
+ if (rate < 75000000)
+ frqsel = PHYCTRL_FRQSEL_50M;
+ else if (rate < 125000000)
+ frqsel = PHYCTRL_FRQSEL_100M;
+ else if (rate < 175000000)
+ frqsel = PHYCTRL_FRQSEL_150M;
+ else
+ frqsel = PHYCTRL_FRQSEL_200M;
+ } else {
+ frqsel = PHYCTRL_FRQSEL_200M;
+ }
+
+ delay(3);
+
+ /* Power up PHY */
+ mask = PHYCTRL_PDB;
+ val = PHYCTRL_PDB;
+ WR4(sc, GRF_EMMCPHY_CON6, (mask << 16) | val);
+
+ /* Wait for calibration */
+ delay(10);
+ val = RD4(sc, GRF_EMMCPHY_STATUS);
+ if ((val & PHYCTRL_CALDONE) == 0) {
+ device_printf(dev, "PHY calibration did not complete\n");
+ return EIO;
+ }
+
+ /* Set DLL frequency */
+ mask = PHYCTRL_FRQSEL;
+ val = __SHIFTIN(frqsel, PHYCTRL_FRQSEL);
+ WR4(sc, GRF_EMMCPHY_CON0, (mask << 16) | val);
+
+ /* Enable DLL */
+ mask = PHYCTRL_ENDLL;
+ val = PHYCTRL_ENDLL;
+ WR4(sc, GRF_EMMCPHY_CON6, (mask << 16) | val);
+
+ if (rate != 0) {
+ /* Wait for DLL ready */
+ delay(50000);
+ val = RD4(sc, GRF_EMMCPHY_STATUS);
+ if ((val & PHYCTRL_DLLRDY) == 0) {
+ device_printf(dev, "DLL loop failed to lock\n");
+ return EIO;
+ }
+ }
+
+ return 0;
+}
+
+static const struct fdtbus_phy_controller_func rk_emmcphy_funcs = {
+ .acquire = rk_emmcphy_acquire,
+ .release = rk_emmcphy_release,
+ .enable = rk_emmcphy_enable,
+};
+
+static int
+rk_emmcphy_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct fdt_attach_args * const faa = aux;
+
+ return of_match_compatible(faa->faa_phandle, compatible);
+}
+
+static void
+rk_emmcphy_attach(device_t parent, device_t self, void *aux)
+{
+ struct rk_emmcphy_softc * const sc = device_private(self);
+ struct fdt_attach_args * const faa = aux;
+ const int phandle = faa->faa_phandle;
+ bus_addr_t addr;
+ bus_size_t size;
+
+ if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+ aprint_error(": couldn't get registers\n");
+ return;
+ }
+
+ sc->sc_dev = self;
+ sc->sc_phandle = phandle;
+ sc->sc_bst = faa->faa_bst;
+ if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
+ aprint_error(": couldn't map registers\n");
+ return;
+ }
+
+ aprint_naive("\n");
+ aprint_normal(": eMMC PHY\n");
+
+ fdtbus_register_phy_controller(self, phandle, &rk_emmcphy_funcs);
+}
diff -r f5cb58ab7730 -r 8ff62600f964 sys/arch/evbarm/conf/GENERIC64
--- a/sys/arch/evbarm/conf/GENERIC64 Sun Mar 10 11:09:35 2019 +0000
+++ b/sys/arch/evbarm/conf/GENERIC64 Sun Mar 10 11:10:21 2019 +0000
@@ -1,5 +1,5 @@
#
-# $NetBSD: GENERIC64,v 1.82 2019/03/06 19:36:59 jakllsch Exp $
+# $NetBSD: GENERIC64,v 1.83 2019/03/10 11:10:21 jmcneill Exp $
#
# GENERIC ARM (aarch64) kernel
#
@@ -338,6 +338,7 @@
dwcmmc* at fdt? # Designware SD/MMC
mesongxmmc* at fdt? # Amlogic Meson GX eMMC/SD/SDIO controller
mmcpwrseq* at fdt? # Simple MMC power sequence provider
+rkemmcphy* at fdt? # Rockchip eMMC PHY
sdhc* at fdt? # SD Host Controller Interface
sdhost* at fdt? # Broadcom BCM283x SD Host Interface
sunximmc* at fdt? # Allwinner SD/MMC
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