The branch main has been updated by bnovkov:
URL:
https://cgit.FreeBSD.org/src/commit/?id=89e650eacc9bb3960b38d704abae06694fad08e6
commit 89e650eacc9bb3960b38d704abae06694fad08e6
Author: Bojan Novković <bnov...@freebsd.org>
AuthorDate: 2025-01-18 19:03:25 +0000
Commit: Bojan Novković <bnov...@freebsd.org>
CommitDate: 2025-08-01 12:35:54 +0000
sdhci: Add driver for the cvitek sdhci controller
This patch add support for cvitek SDHCI controller (only SD card mode).
This controller is present on Milk-V's riscv SoCs.
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D48528
---
sys/dev/sdhci/sdhci_fdt_cvitek.c | 144 +++++++++++++++++++++++++++++++++++++++
1 file changed, 144 insertions(+)
diff --git a/sys/dev/sdhci/sdhci_fdt_cvitek.c b/sys/dev/sdhci/sdhci_fdt_cvitek.c
new file mode 100644
index 000000000000..e13e10df0dc2
--- /dev/null
+++ b/sys/dev/sdhci/sdhci_fdt_cvitek.c
@@ -0,0 +1,144 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 Bojan Novković <bnov...@freebsd.org>
+ *
+ * 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/param.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/types.h>
+#include <sys/taskqueue.h>
+#include <sys/module.h>
+
+#include <machine/bus.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#include <dev/ofw/ofw_subr.h>
+#include <dev/clk/clk.h>
+#include <dev/clk/clk_fixed.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/syscon/syscon.h>
+
+#include <dev/phy/phy.h>
+#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmcbrvar.h>
+#include <dev/mmc/mmcreg.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
+
+#include <dev/sdhci/sdhci.h>
+#include <dev/sdhci/sdhci_fdt_gpio.h>
+#include <dev/sdhci/sdhci_fdt.h>
+
+#include "syscon_if.h"
+#include "mmcbr_if.h"
+#include "sdhci_if.h"
+
+#include "opt_mmccam.h"
+#include "opt_soc.h"
+
+#define CV181X_SYSCTRL_SD_PWRSW_CTRL 0x1F4
+#define SD_PWRSW_CTRL_RESET_MASK 0x9
+#define CVI_CV181X_SDHCI_VENDOR_OFFSET 0x200
+#define CVI_CV181X_SDHCI_EMMC_CTRL (CVI_CV181X_SDHCI_VENDOR_OFFSET + 0x0)
+#define EMMC_CTRL_RESET_MASK 0x302
+#define CVI_CV181X_SDHCI_PHY_TX_RX_DLY (CVI_CV181X_SDHCI_VENDOR_OFFSET + 0x40)
+#define PHY_TX_RX_DLY_RESET_MASK 0x1000100
+#define CVI_CV181X_SDHCI_PHY_CONFIG (CVI_CV181X_SDHCI_VENDOR_OFFSET + 0x4C)
+#define PHY_CONFIG_RESET_MASK 0x1
+
+#define SDHCI_FDT_CVITEK_CV181X_SD 1
+
+static struct ofw_compat_data compat_data[] = {
+ { "cvitek,cv181x-sd", SDHCI_FDT_CVITEK_CV181X_SD },
+ { NULL, 0 }
+};
+
+static int
+sdhci_fdt_cvitek_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
+ return (ENXIO);
+
+ device_set_desc(dev, "Cvitek CV181x SDHCI controller");
+ return (BUS_PROBE_SPECIFIC);
+}
+
+static int
+sdhci_fdt_cvitek_attach(device_t dev)
+{
+ int error;
+ uint32_t reg;
+ phandle_t node;
+ struct resource *res;
+ struct syscon *syscon;
+ struct sdhci_fdt_softc *sc = device_get_softc(dev);
+
+ if (sdhci_fdt_attach(dev))
+ return (ENXIO);
+
+ res = sc->mem_res[0];
+ node = ofw_bus_find_compatible(OF_finddevice("/"), "syscon");
+ error = syscon_get_by_ofw_node(dev, node, &syscon);
+ if (error != 0) {
+ device_printf(dev, "Couldn't get syscon handle\n");
+ return (error);
+ }
+
+ SYSCON_WRITE_4(syscon, CV181X_SYSCTRL_SD_PWRSW_CTRL,
+ SD_PWRSW_CTRL_RESET_MASK);
+ DELAY(1000);
+
+ reg = bus_read_4(res, CVI_CV181X_SDHCI_EMMC_CTRL);
+ reg |= EMMC_CTRL_RESET_MASK;
+ bus_write_4(res, CVI_CV181X_SDHCI_EMMC_CTRL, reg);
+ bus_write_4(res, CVI_CV181X_SDHCI_PHY_TX_RX_DLY,
+ PHY_TX_RX_DLY_RESET_MASK);
+ bus_write_4(res, CVI_CV181X_SDHCI_PHY_CONFIG,
+ PHY_CONFIG_RESET_MASK);
+
+ return (0);
+}
+
+static device_method_t sdhci_fdt_cvitek_methods[] = {
+ /* device_if */
+ DEVMETHOD(device_probe, sdhci_fdt_cvitek_probe),
+ DEVMETHOD(device_attach, sdhci_fdt_cvitek_attach),
+
+ DEVMETHOD_END
+};
+extern driver_t sdhci_fdt_driver;
+
+DEFINE_CLASS_1(sdhci_cvitek, sdhci_fdt_cvitek_driver, sdhci_fdt_cvitek_methods,
+ sizeof(struct sdhci_fdt_softc), sdhci_fdt_driver);
+DRIVER_MODULE(sdhci_cvitek, simplebus, sdhci_fdt_cvitek_driver, NULL, NULL);
+
+#ifndef MMCCAM
+MMC_DECLARE_BRIDGE(sdhci_fdt_cvitek);
+#endif
