mmc: mtk-sd: add support for MediaTek MT7620/MT7628 SoCs
This patch adds mmc support for MediaTek MT7620/MT7628 SoCs.
diff --git a/drivers/mmc/mtk-sd.c b/drivers/mmc/mtk-sd.c
index f555357..7069fe8 100644
--- a/drivers/mmc/mtk-sd.c
+++ b/drivers/mmc/mtk-sd.c
@@ -217,6 +217,7 @@
struct msdc_compatible {
u8 clk_div_bits;
+ u8 sclk_cycle_shift;
bool pad_tune0;
bool async_fifo;
bool data_tune;
@@ -664,7 +665,7 @@
static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
{
- u32 timeout, clk_ns;
+ u32 timeout, clk_ns, shift;
u32 mode = 0;
host->timeout_ns = ns;
@@ -673,10 +674,11 @@
if (host->sclk == 0) {
timeout = 0;
} else {
+ shift = host->dev_comp->sclk_cycle_shift;
clk_ns = 1000000000UL / host->sclk;
timeout = (ns + clk_ns - 1) / clk_ns + clks;
/* unit is 1048576 sclk cycles */
- timeout = (timeout + (0x1 << 20) - 1) >> 20;
+ timeout = (timeout + (0x1 << shift) - 1) >> shift;
if (host->dev_comp->clk_div_bits == 8)
mode = (readl(&host->base->msdc_cfg) &
MSDC_CFG_CKMOD_M) >> MSDC_CFG_CKMOD_S;
@@ -1301,7 +1303,7 @@
host->mmc = &plat->mmc;
host->timeout_ns = 100000000;
- host->timeout_clks = 3 * 1048576;
+ host->timeout_clks = 3 * (1 << host->dev_comp->sclk_cycle_shift);
#ifdef CONFIG_PINCTRL
pinctrl_select_state(dev, "default");
@@ -1374,8 +1376,20 @@
#endif
};
+static const struct msdc_compatible mt7620_compat = {
+ .clk_div_bits = 8,
+ .sclk_cycle_shift = 16,
+ .pad_tune0 = false,
+ .async_fifo = false,
+ .data_tune = false,
+ .busy_check = false,
+ .stop_clk_fix = false,
+ .enhance_rx = false
+};
+
static const struct msdc_compatible mt7623_compat = {
.clk_div_bits = 12,
+ .sclk_cycle_shift = 20,
.pad_tune0 = true,
.async_fifo = true,
.data_tune = true,
@@ -1386,6 +1400,7 @@
static const struct msdc_compatible mt8516_compat = {
.clk_div_bits = 12,
+ .sclk_cycle_shift = 20,
.pad_tune0 = true,
.async_fifo = true,
.data_tune = true,
@@ -1395,6 +1410,7 @@
static const struct msdc_compatible mt8183_compat = {
.clk_div_bits = 12,
+ .sclk_cycle_shift = 20,
.pad_tune0 = true,
.async_fifo = true,
.data_tune = true,
@@ -1403,6 +1419,7 @@
};
static const struct udevice_id msdc_ids[] = {
+ { .compatible = "mediatek,mt7620-mmc", .data = (ulong)&mt7620_compat },
{ .compatible = "mediatek,mt7623-mmc", .data = (ulong)&mt7623_compat },
{ .compatible = "mediatek,mt8516-mmc", .data = (ulong)&mt8516_compat },
{ .compatible = "mediatek,mt8183-mmc", .data = (ulong)&mt8183_compat },