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[src/trunk]: src/sys/arch/arm/amlogic Enable UHS-I support
details: https://anonhg.NetBSD.org/src/rev/eaef676d7968
branches: trunk
changeset: 809841:eaef676d7968
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Tue Aug 04 01:23:07 2015 +0000
description:
Enable UHS-I support
diffstat:
sys/arch/arm/amlogic/amlogic_board.c | 31 ++++++++++++++++++++-
sys/arch/arm/amlogic/amlogic_sdhc.c | 52 +++++++++++++++++++++++++++++++----
sys/arch/arm/amlogic/amlogic_var.h | 5 ++-
3 files changed, 79 insertions(+), 9 deletions(-)
diffs (203 lines):
diff -r d4252a488bca -r eaef676d7968 sys/arch/arm/amlogic/amlogic_board.c
--- a/sys/arch/arm/amlogic/amlogic_board.c Tue Aug 04 01:21:55 2015 +0000
+++ b/sys/arch/arm/amlogic/amlogic_board.c Tue Aug 04 01:23:07 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: amlogic_board.c,v 1.12 2015/04/19 18:54:52 jmcneill Exp $ */
+/* $NetBSD: amlogic_board.c,v 1.13 2015/08/04 01:23:07 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
#include "opt_amlogic.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: amlogic_board.c,v 1.12 2015/04/19 18:54:52 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: amlogic_board.c,v 1.13 2015/08/04 01:23:07 jmcneill Exp $");
#define _ARM32_BUS_DMA_PRIVATE
#include <sys/param.h>
@@ -306,6 +306,33 @@
}
void
+amlogic_sdhc_set_voltage(int port, int voltage)
+{
+ const bus_size_t gpioao_reg = AMLOGIC_GPIOAO_OFFSET;
+ bus_space_tag_t bst = &armv7_generic_bs_tag;
+ bus_space_handle_t bsh = amlogic_core_bsh;
+ uint32_t val;
+ u_int pin;
+
+ switch (port) {
+ case AMLOGIC_SDHC_PORT_B:
+ /* GPIO GPIOAO_3 */
+ pin = 3;
+ val = bus_space_read_4(bst, bsh, gpioao_reg);
+ val &= ~__BIT(pin); /* OEN */
+ bus_space_write_4(bst, bsh, gpioao_reg, val);
+ if (voltage == AMLOGIC_SDHC_VOL_180) {
+ val |= __BIT(pin + 16); /* OUT */
+ } else {
+ val &= ~__BIT(pin + 16); /* OUT */
+ }
+ bus_space_write_4(bst, bsh, gpioao_reg, val);
+ delay(20000);
+ break;
+ }
+}
+
+void
amlogic_sdio_init(void)
{
/* enable SDIO clk */
diff -r d4252a488bca -r eaef676d7968 sys/arch/arm/amlogic/amlogic_sdhc.c
--- a/sys/arch/arm/amlogic/amlogic_sdhc.c Tue Aug 04 01:21:55 2015 +0000
+++ b/sys/arch/arm/amlogic/amlogic_sdhc.c Tue Aug 04 01:23:07 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: amlogic_sdhc.c,v 1.6 2015/04/19 22:51:04 jmcneill Exp $ */
+/* $NetBSD: amlogic_sdhc.c,v 1.7 2015/08/04 01:23:07 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
#include "locators.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: amlogic_sdhc.c,v 1.6 2015/04/19 22:51:04 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: amlogic_sdhc.c,v 1.7 2015/08/04 01:23:07 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -68,6 +68,9 @@
bus_dmamap_t sc_dmamap;
bus_dma_segment_t sc_segs[1];
void *sc_bbuf;
+
+ u_int sc_port;
+ int sc_signal_voltage;
};
CFATTACH_DECL_NEW(amlogic_sdhc, sizeof(struct amlogic_sdhc_softc),
@@ -86,6 +89,7 @@
struct sdmmc_command *);
static void amlogic_sdhc_card_enable_intr(sdmmc_chipset_handle_t, int);
static void amlogic_sdhc_card_intr_ack(sdmmc_chipset_handle_t);
+static int amlogic_sdhc_signal_voltage(sdmmc_chipset_handle_t, int);
static int amlogic_sdhc_set_clock(struct amlogic_sdhc_softc *, u_int);
static int amlogic_sdhc_wait_idle(struct amlogic_sdhc_softc *);
@@ -106,6 +110,7 @@
.exec_command = amlogic_sdhc_exec_command,
.card_enable_intr = amlogic_sdhc_card_enable_intr,
.card_intr_ack = amlogic_sdhc_card_intr_ack,
+ .signal_voltage = amlogic_sdhc_signal_voltage,
};
#define SDHC_WRITE(sc, reg, val) \
@@ -139,6 +144,8 @@
loc->loc_offset, loc->loc_size, &sc->sc_bsh);
mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_BIO);
cv_init(&sc->sc_intr_cv, "sdhcintr");
+ sc->sc_port = loc->loc_port;
+ sc->sc_signal_voltage = SDMMC_SIGNAL_VOLTAGE_330;
amlogic_sdhc_init();
if (amlogic_sdhc_select_port(loc->loc_port) != 0) {
@@ -168,6 +175,9 @@
{
struct amlogic_sdhc_softc *sc = device_private(self);
struct sdmmcbus_attach_args saa;
+ u_int pll_freq;
+
+ pll_freq = amlogic_get_rate_fixed() / 1000 / 3;
amlogic_sdhc_host_reset(sc);
amlogic_sdhc_bus_width(sc, 1);
@@ -178,12 +188,14 @@
saa.saa_dmat = sc->sc_dmat;
saa.saa_sch = sc;
saa.saa_clkmin = 400;
- saa.saa_clkmax = 50000;
+ saa.saa_clkmax = pll_freq;
/* Do not advertise DMA capabilities, we handle DMA ourselves */
saa.saa_caps = SMC_CAPS_4BIT_MODE|
SMC_CAPS_8BIT_MODE|
SMC_CAPS_SD_HIGHSPEED|
SMC_CAPS_MMC_HIGHSPEED|
+ SMC_CAPS_UHS_SDR50|
+ SMC_CAPS_UHS_SDR104|
SMC_CAPS_AUTO_STOP;
sc->sc_sdmmc_dev = config_found(self, &saa, NULL);
@@ -288,9 +300,16 @@
clk2 &= ~SD_CLK2_RX_CLK_PHASE;
const u_int act_freq = pll_freq / clk_div;
- if (act_freq > 45000) {
+ if (act_freq > 90000) {
+ clk2 |= __SHIFTIN(1, SD_CLK2_RX_CLK_PHASE);
+ } else if (act_freq > 45000) {
+ if (sc->sc_signal_voltage == SDMMC_SIGNAL_VOLTAGE_330) {
+ clk2 |= __SHIFTIN(15, SD_CLK2_RX_CLK_PHASE);
+ } else {
+ clk2 |= __SHIFTIN(11, SD_CLK2_RX_CLK_PHASE);
+ }
+ } else if (act_freq >= 25000) {
clk2 |= __SHIFTIN(15, SD_CLK2_RX_CLK_PHASE);
- /* XXX 11 for 1.8V */
} else if (act_freq > 5000) {
clk2 |= __SHIFTIN(23, SD_CLK2_RX_CLK_PHASE);
} else if (act_freq > 1000) {
@@ -401,7 +420,8 @@
static uint32_t
amlogic_sdhc_host_ocr(sdmmc_chipset_handle_t sch)
{
- return MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V;
+ return MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V |
+ MMC_OCR_HCS | MMC_OCR_S18A;
}
static int
@@ -668,3 +688,23 @@
amlogic_sdhc_card_intr_ack(sdmmc_chipset_handle_t sch)
{
}
+
+static int
+amlogic_sdhc_signal_voltage(sdmmc_chipset_handle_t sch, int signal_voltage)
+{
+ struct amlogic_sdhc_softc *sc = sch;
+
+ switch (signal_voltage) {
+ case SDMMC_SIGNAL_VOLTAGE_330:
+ amlogic_sdhc_set_voltage(sc->sc_port, AMLOGIC_SDHC_VOL_330);
+ break;
+ case SDMMC_SIGNAL_VOLTAGE_180:
+ amlogic_sdhc_set_voltage(sc->sc_port, AMLOGIC_SDHC_VOL_180);
+ break;
+ default:
+ return EINVAL;
+ }
+
+ sc->sc_signal_voltage = signal_voltage;
+ return 0;
+}
diff -r d4252a488bca -r eaef676d7968 sys/arch/arm/amlogic/amlogic_var.h
--- a/sys/arch/arm/amlogic/amlogic_var.h Tue Aug 04 01:21:55 2015 +0000
+++ b/sys/arch/arm/amlogic/amlogic_var.h Tue Aug 04 01:23:07 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: amlogic_var.h,v 1.10 2015/04/19 18:54:52 jmcneill Exp $ */
+/* $NetBSD: amlogic_var.h,v 1.11 2015/08/04 01:23:07 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -72,6 +72,9 @@
#define AMLOGIC_SDHC_PORT_A 0
#define AMLOGIC_SDHC_PORT_B 1
#define AMLOGIC_SDHC_PORT_C 2
+void amlogic_sdhc_set_voltage(int, int);
+#define AMLOGIC_SDHC_VOL_330 0
+#define AMLOGIC_SDHC_VOL_180 1
int amlogic_sdio_select_port(int);
#define AMLOGIC_SDIO_PORT_A 0
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