git: e00774a91750 - main - Add support for Rockchip RK3568 SDHCI controller.
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Date: Sat, 24 Dec 2022 12:40:55 UTC
The branch main has been updated by ganbold:
URL: https://cgit.FreeBSD.org/src/commit/?id=e00774a917503e7e23c469954471c2b519e852c1
commit e00774a917503e7e23c469954471c2b519e852c1
Author: Søren Schmidt <sos@FreeBSD.org>
AuthorDate: 2022-12-24 12:38:33 +0000
Commit: Ganbold Tsagaankhuu <ganbold@FreeBSD.org>
CommitDate: 2022-12-24 12:38:33 +0000
Add support for Rockchip RK3568 SDHCI controller.
---
sys/dev/sdhci/sdhci.c | 1 +
sys/dev/sdhci/sdhci_fdt.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++
sys/dev/sdhci/sdhci_if.m | 14 +++++++
3 files changed, 119 insertions(+)
diff --git a/sys/dev/sdhci/sdhci.c b/sys/dev/sdhci/sdhci.c
index d8532b132ac5..a7283e66df31 100644
--- a/sys/dev/sdhci/sdhci.c
+++ b/sys/dev/sdhci/sdhci.c
@@ -419,6 +419,7 @@ sdhci_set_clock(struct sdhci_slot *slot, uint32_t clock)
if (clock == slot->clock)
return;
+ clock = SDHCI_SET_CLOCK(slot->bus, slot, clock);
slot->clock = clock;
/* Turn off the clock. */
diff --git a/sys/dev/sdhci/sdhci_fdt.c b/sys/dev/sdhci/sdhci_fdt.c
index f7e6eb27d180..dcc16a87a9f8 100644
--- a/sys/dev/sdhci/sdhci_fdt.c
+++ b/sys/dev/sdhci/sdhci_fdt.c
@@ -76,6 +76,7 @@ __FBSDID("$FreeBSD$");
#define SDHCI_FDT_XLNX_ZY7 3
#define SDHCI_FDT_QUALCOMM 4
#define SDHCI_FDT_RK3399 5
+#define SDHCI_FDT_RK3568 6
#define RK3399_GRF_EMMCCORE_CON0 0xf000
#define RK3399_CORECFG_BASECLKFREQ 0xff00
@@ -84,6 +85,33 @@ __FBSDID("$FreeBSD$");
#define RK3399_GRF_EMMCCORE_CON11 0xf02c
#define RK3399_CORECFG_CLOCKMULTIPLIER 0xff
+#define RK3568_EMMC_HOST_CTRL 0x0508
+#define RK3568_EMMC_EMMC_CTRL 0x052c
+#define RK3568_EMMC_ATCTRL 0x0540
+#define RK3568_EMMC_DLL_CTRL 0x0800
+#define DLL_CTRL_SRST 0x00000001
+#define DLL_CTRL_START 0x00000002
+#define DLL_CTRL_START_POINT_DEFAULT 0x00050000
+#define DLL_CTRL_INCREMENT_DEFAULT 0x00000200
+
+#define RK3568_EMMC_DLL_RXCLK 0x0804
+#define DLL_RXCLK_DELAY_ENABLE 0x08000000
+#define DLL_RXCLK_NO_INV 0x20000000
+
+#define RK3568_EMMC_DLL_TXCLK 0x0808
+#define DLL_TXCLK_DELAY_ENABLE 0x08000000
+#define DLL_TXCLK_TAPNUM_DEFAULT 0x00000008
+#define DLL_TXCLK_TAPNUM_FROM_SW 0x01000000
+
+#define RK3568_EMMC_DLL_STRBIN 0x080c
+#define DLL_STRBIN_DELAY_ENABLE 0x08000000
+#define DLL_STRBIN_TAPNUM_DEFAULT 0x00000008
+#define DLL_STRBIN_TAPNUM_FROM_SW 0x01000000
+
+#define RK3568_EMMC_DLL_STATUS0 0x0840
+#define DLL_STATUS0_DLL_LOCK 0x00000100
+#define DLL_STATUS0_DLL_TIMEOUT 0x00000200
+
#define LOWEST_SET_BIT(mask) ((((mask) - 1) & (mask)) ^ (mask))
#define SHIFTIN(x, mask) ((x) * LOWEST_SET_BIT(mask))
@@ -95,6 +123,7 @@ static struct ofw_compat_data compat_data[] = {
{ "qcom,sdhci-msm-v4", SDHCI_FDT_QUALCOMM },
{ "rockchip,rk3399-sdhci-5.1", SDHCI_FDT_RK3399 },
{ "xlnx,zy7_sdhci", SDHCI_FDT_XLNX_ZY7 },
+ { "rockchip,rk3568-dwcmshc", SDHCI_FDT_RK3568 },
{ NULL, 0 }
};
@@ -116,6 +145,7 @@ struct sdhci_fdt_softc {
clk_t clk_xin; /* xin24m fixed clock */
clk_t clk_ahb; /* ahb clock */
+ clk_t clk_core; /* core clock */
phy_t phy; /* phy to be used */
};
@@ -404,6 +434,66 @@ sdhci_fdt_get_ro(device_t bus, device_t dev)
return (sdhci_generic_get_ro(bus, dev) ^ sc->wp_inverted);
}
+static int
+sdhci_fdt_set_clock(device_t dev, struct sdhci_slot *slot, int clock)
+{
+ struct sdhci_fdt_softc *sc = device_get_softc(dev);
+ int32_t val;
+ int i;
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data ==
+ SDHCI_FDT_RK3568) {
+ if (clock == 400000)
+ clock = 375000;
+
+ if (clock) {
+ clk_set_freq(sc->clk_core, clock, 0);
+
+ if (clock <= 52000000) {
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_CTRL, 0x0);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_RXCLK, DLL_RXCLK_NO_INV);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_TXCLK, 0x0);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_STRBIN, 0x0);
+ return (clock);
+ }
+
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_CTRL, DLL_CTRL_START);
+ DELAY(1000);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_CTRL, 0);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_CTRL, DLL_CTRL_START_POINT_DEFAULT |
+ DLL_CTRL_INCREMENT_DEFAULT | DLL_CTRL_START);
+ for (i = 0; i < 500; i++) {
+ val = bus_read_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_STATUS0);
+ if (val & DLL_STATUS0_DLL_LOCK &&
+ !(val & DLL_STATUS0_DLL_TIMEOUT))
+ break;
+ DELAY(1000);
+ }
+ bus_write_4(sc->mem_res[slot->num], RK3568_EMMC_ATCTRL,
+ (0x1 << 16 | 0x2 << 17 | 0x3 << 19));
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_RXCLK,
+ DLL_RXCLK_DELAY_ENABLE | DLL_RXCLK_NO_INV);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_TXCLK, DLL_TXCLK_DELAY_ENABLE |
+ DLL_TXCLK_TAPNUM_DEFAULT|DLL_TXCLK_TAPNUM_FROM_SW);
+ bus_write_4(sc->mem_res[slot->num],
+ RK3568_EMMC_DLL_STRBIN, DLL_STRBIN_DELAY_ENABLE |
+ DLL_STRBIN_TAPNUM_DEFAULT |
+ DLL_STRBIN_TAPNUM_FROM_SW);
+ }
+ }
+ return (clock);
+}
+
static int
sdhci_fdt_probe(device_t dev)
{
@@ -439,6 +529,9 @@ sdhci_fdt_probe(device_t dev)
sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller");
break;
+ case SDHCI_FDT_RK3568:
+ device_set_desc(dev, "Rockchip RK3568 fdt SDHCI controller");
+ break;
default:
return (ENXIO);
}
@@ -488,6 +581,16 @@ sdhci_fdt_attach(device_t dev)
}
}
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data ==
+ SDHCI_FDT_RK3568) {
+ /* setup & enable clocks */
+ if (clk_get_by_ofw_name(dev, 0, "core", &sc->clk_core)) {
+ device_printf(dev, "cannot get core clock\n");
+ return (ENXIO);
+ }
+ clk_enable(sc->clk_core);
+ }
+
/* Scan all slots. */
slots = sc->num_slots; /* number of slots determined in probe(). */
sc->num_slots = 0;
@@ -577,6 +680,7 @@ static device_method_t sdhci_fdt_methods[] = {
DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2),
DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4),
DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4),
+ DEVMETHOD(sdhci_set_clock, sdhci_fdt_set_clock),
DEVMETHOD_END
};
diff --git a/sys/dev/sdhci/sdhci_if.m b/sys/dev/sdhci/sdhci_if.m
index c888f35bdaf0..531ef0e3adec 100644
--- a/sys/dev/sdhci/sdhci_if.m
+++ b/sys/dev/sdhci/sdhci_if.m
@@ -69,6 +69,14 @@
#include <dev/sdhci/sdhci.h>
CODE {
+ static int
+ null_set_clock(device_t brdev __unused,
+ struct sdhci_slot *slot __unused,
+ int clock)
+ {
+ return (clock);
+ }
+
static void
null_set_uhs_timing(device_t brdev __unused,
struct sdhci_slot *slot __unused)
@@ -165,6 +173,12 @@ METHOD void set_uhs_timing {
struct sdhci_slot *slot;
} DEFAULT null_set_uhs_timing;
+METHOD int set_clock {
+ device_t brdev;
+ struct sdhci_slot *slot;
+ int clock;
+} DEFAULT null_set_clock;
+
METHOD void reset {
device_t brdev;
struct sdhci_slot *slot;