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mmc: rockchip_sdhci: Use set_clock and config_dll sdhci_ops

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Change to configure clock and DLL in set_clock and config_dll ops
instead of in the set_ios_post ops.

With this change the output clock is turned off while configuring DLL
parameters, according to the design recommendations.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Jonas Karlman 2023-04-20 15:55:15 +00:00 committed by Kever Yang
parent 7e74522d5f
commit b8a63c869c
1 changed files with 15 additions and 13 deletions
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28
drivers/mmc/rockchip_sdhci.c
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@ -291,18 +291,24 @@ static int rk3399_sdhci_set_ios_post(struct sdhci_host *host)
return 0;
}
static int rk3568_sdhci_emmc_set_clock(struct sdhci_host *host, unsigned int clock)
static void rk3568_sdhci_set_clock(struct sdhci_host *host, u32 div)
{
struct rockchip_sdhc *priv = container_of(host, struct rockchip_sdhc, host);
struct mmc *mmc = host->mmc;
ulong rate;
rate = clk_set_rate(&priv->emmc_clk, mmc->clock);
if (IS_ERR_VALUE(rate))
printf("%s: Set clock rate failed: %ld\n", __func__, (long)rate);
}
static int rk3568_sdhci_config_dll(struct sdhci_host *host, u32 clock, bool enable)
{
int val, ret;
u32 extra;
if (clock > host->max_clk)
clock = host->max_clk;
if (clock)
clk_set_rate(&priv->emmc_clk, clock);
sdhci_set_clock(host->mmc, clock);
if (!enable)
return 0;
if (clock >= 100 * MHz) {
/* reset DLL */
@ -386,14 +392,8 @@ static int rk3568_sdhci_set_enhanced_strobe(struct sdhci_host *host)
static int rk3568_sdhci_set_ios_post(struct sdhci_host *host)
{
struct mmc *mmc = host->mmc;
uint clock = mmc->clock;
u32 reg, vendor_reg;
if (mmc->tran_speed && mmc->clock > mmc->tran_speed)
clock = mmc->tran_speed;
rk3568_sdhci_emmc_set_clock(host, clock);
if (mmc->selected_mode == MMC_HS_400 || mmc->selected_mode == MMC_HS_400_ES) {
reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
reg &= ~SDHCI_CTRL_UHS_MASK;
@ -614,6 +614,8 @@ static const struct sdhci_data rk3399_data = {
static const struct sdhci_data rk3568_data = {
.get_phy = rk3568_emmc_get_phy,
.set_ios_post = rk3568_sdhci_set_ios_post,
.set_clock = rk3568_sdhci_set_clock,
.config_dll = rk3568_sdhci_config_dll,
.set_enhanced_strobe = rk3568_sdhci_set_enhanced_strobe,
};