From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="JGOwng2k" Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C91761998 for ; Fri, 8 Dec 2023 12:21:31 -0800 (PST) Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1d0c93b1173so19191675ad.2 for ; Fri, 08 Dec 2023 12:21:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1702066891; x=1702671691; darn=vger.kernel.org; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=oYVGMasD9CVPZltjUGQRYY+db3ybFOvARtiIujjn4gQ=; b=JGOwng2kh3jt5QWLb376skLBkzlGb2xtl2tF71A/psyNfLLm30XjwuVDQx+NUUbpTW tTDhR0dAVpOWw76PdsZ+vkKdoG+e3bobj1WAW8Jnn5KhhPvhD+9jEi7jQEN+0ZAD9BWc lxwXBs3pMYEmq8WinUAsXfp/c1dVbInMgxZEc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702066891; x=1702671691; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=oYVGMasD9CVPZltjUGQRYY+db3ybFOvARtiIujjn4gQ=; b=G69/YPif8LMmwIdgwuCwJaGss9JPcSRNMkd2y9j+QQUJca74Uf/kbDwBCllol9Cj6q h1Ye/3AipdhqUpUtlm9ioYTTUp3qn48EAMjZnroVLMp564yAL0eMT5yOP4OK/xn0On5p m1lBufXrpLVgFLA9mqzeU8Ep2fGpU2DLfSsbFGPVVw+MDnYLCwOu/qj5xHET/VklT/tJ fjy/o1sSsiT3gnNQYGOvxzQyAjLiZzmhuyT7uq2aU8k6kByjeSzcE9BDPvGQCLPp6txN 7OT4W/lpAuPF1e9BcuKwWGXwqrxU1EKWoIFAfSmsdSzG8Ol8r+KGsIDgEyI3Zgj2T9fF F08Q== X-Gm-Message-State: AOJu0Yy06dk0A/0XyF1YR6mTmMwNcQSlPHpzr6il8OmhH2PFKcQgb8C4 MroO/oE460DWOQSgpoxW5qDPHg== X-Google-Smtp-Source: AGHT+IH+nTOgLpRgnuZLYs5BQXNJBtNy9L5TktNY5AwoGQViw82oVKYXe5ga1sI8TztgRgy15ZE8Pw== X-Received: by 2002:a17:902:c20d:b0:1d0:3eac:e66 with SMTP id 13-20020a170902c20d00b001d03eac0e66mr574433pll.29.1702066891085; Fri, 08 Dec 2023 12:21:31 -0800 (PST) Received: from mail.broadcom.net ([192.19.144.250]) by smtp.gmail.com with ESMTPSA id v29-20020a63481d000000b005c19c586cb7sm1952127pga.33.2023.12.08.12.21.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Dec 2023 12:21:30 -0800 (PST) From: Kamal Dasu To: ulf.hansson@linaro.org, linux-kernel@vger.kernel.org, alcooperx@gmail.com, linux-arm-kernel@lists.infradead.org, adrian.hunter@intel.com, linux-mmc@vger.kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org Cc: f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, Kamal Dasu Subject: [PATCH 2/2] mmc: add new sdhci reset sequence for brcm 74165b0 Date: Fri, 8 Dec 2023 15:21:08 -0500 Message-Id: <20231208202108.7468-2-kamal.dasu@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231208202108.7468-1-kamal.dasu@broadcom.com> References: <20231208202108.7468-1-kamal.dasu@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000007368f0060c0554f0" Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: --0000000000007368f0060c0554f0 From: Kamal Dasu 74165b0 shall use a new sdio controller core version which requires a different reset sequence. For core reset we use sdhci_reset. For CMD and/or DATA reset added a new function to also enable SDCHI clocks SDHCI_CLOCK_CARD_EN SDHCI_CLOCK_INT_EN along with the SDHCI_RESET_CMD and/or SDHCI_RESET_DATA fields. Signed-off-by: Kamal Dasu --- drivers/mmc/host/sdhci-brcmstb.c | 69 +++++++++++++++++++++++++++++--- 1 file changed, 64 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c index c23251bb95f3..3fac471b5b5d 100644 --- a/drivers/mmc/host/sdhci-brcmstb.c +++ b/drivers/mmc/host/sdhci-brcmstb.c @@ -44,8 +44,13 @@ struct brcmstb_match_priv { static inline void enable_clock_gating(struct sdhci_host *host) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host); u32 reg; + if (!(priv->flags & BRCMSTB_PRIV_FLAGS_GATE_CLOCK)) + return; + reg = sdhci_readl(host, SDHCI_VENDOR); reg |= SDHCI_VENDOR_GATE_SDCLK_EN; sdhci_writel(host, reg, SDHCI_VENDOR); @@ -53,14 +58,54 @@ static inline void enable_clock_gating(struct sdhci_host *host) static void brcmstb_reset(struct sdhci_host *host, u8 mask) { - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host); - sdhci_and_cqhci_reset(host, mask); /* Reset will clear this, so re-enable it */ - if (priv->flags & BRCMSTB_PRIV_FLAGS_GATE_CLOCK) - enable_clock_gating(host); + enable_clock_gating(host); +} + +static void brcmstb_sdhci_reset_cmd_data(struct sdhci_host *host, u8 mask) +{ + ktime_t timeout; + u32 reg; + u32 new_mask = (mask & (SDHCI_RESET_CMD | SDHCI_RESET_DATA)) << 24; + + new_mask |= SDHCI_CLOCK_CARD_EN | SDHCI_CLOCK_INT_EN; + reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL); + sdhci_writel(host, reg | new_mask, SDHCI_CLOCK_CONTROL); + + /* Wait max 10 ms */ + timeout = ktime_add_ms(ktime_get(), 10); + + /* hw clears the bit when it's done */ + while (1) { + bool timedout = ktime_after(ktime_get(), timeout); + + if (!(sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask)) + break; + if (timedout) { + pr_err("%s: Reset 0x%x never completed.\n", + mmc_hostname(host->mmc), (int)mask); + sdhci_err_stats_inc(host, CTRL_TIMEOUT); + sdhci_dumpregs(host); + return; + } + udelay(10); + } +} + +static void brcmstb_reset_74165b0(struct sdhci_host *host, u8 mask) +{ + /* take care of RESET_ALL as usual */ + if (mask & SDHCI_RESET_ALL) + sdhci_and_cqhci_reset(host, SDHCI_RESET_ALL); + + /* cmd and/or data treated differently on this core */ + if (mask & (SDHCI_RESET_CMD | SDHCI_RESET_DATA)) + brcmstb_sdhci_reset_cmd_data(host, mask); + + /* Reset will clear this, so re-enable it */ + enable_clock_gating(host); } static void sdhci_brcmstb_hs400es(struct mmc_host *mmc, struct mmc_ios *ios) @@ -162,6 +207,13 @@ static struct sdhci_ops sdhci_brcmstb_ops_7216 = { .set_uhs_signaling = sdhci_brcmstb_set_uhs_signaling, }; +static const struct sdhci_ops sdhci_brcmstb_ops_74165b0 = { + .set_clock = sdhci_brcmstb_set_clock, + .set_bus_width = sdhci_set_bus_width, + .reset = brcmstb_reset_74165b0, + .set_uhs_signaling = sdhci_brcmstb_set_uhs_signaling, +}; + static struct brcmstb_match_priv match_priv_7425 = { .flags = BRCMSTB_MATCH_FLAGS_NO_64BIT | BRCMSTB_MATCH_FLAGS_BROKEN_TIMEOUT, @@ -179,10 +231,17 @@ static const struct brcmstb_match_priv match_priv_7216 = { .ops = &sdhci_brcmstb_ops_7216, }; +static const struct brcmstb_match_priv match_priv_74165b0 = { + .flags = BRCMSTB_MATCH_FLAGS_HAS_CLOCK_GATE, + .hs400es = sdhci_brcmstb_hs400es, + .ops = &sdhci_brcmstb_ops_74165b0, +}; + static const struct of_device_id __maybe_unused sdhci_brcm_of_match[] = { { .compatible = "brcm,bcm7425-sdhci", .data = &match_priv_7425 }, { .compatible = "brcm,bcm7445-sdhci", .data = &match_priv_7445 }, { .compatible = "brcm,bcm7216-sdhci", .data = &match_priv_7216 }, + { .compatible = "brcm,bcm74165b0-sdhci", .data = &match_priv_74165b0 }, {}, }; -- 2.17.1 --0000000000007368f0060c0554f0 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQZwYJKoZIhvcNAQcCoIIQWDCCEFQCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg2+MIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e aqsXsipoX1vsNurqPtnC27TWsA7pk4uKXscFjkeUE8JZu9BDKaswZygxBOPBQBwrA5+20Wxlk6k1 e6EKaaNaNZUy30q3ArEf30ZDpXyfCtiXnupjSK8WU2cK4qsEtj09JS4+mhi0CTCrCnXAzum3tgcH cHRg0prcSzzEUDQWoFxyuqwiwhHu3sPQNmFOMwIDAQABo4IB2jCCAdYwDgYDVR0PAQH/BAQDAgGG MGAGA1UdJQRZMFcGCCsGAQUFBwMCBggrBgEFBQcDBAYKKwYBBAGCNxQCAgYKKwYBBAGCNwoDBAYJ KwYBBAGCNxUGBgorBgEEAYI3CgMMBggrBgEFBQcDBwYIKwYBBQUHAxEwEgYDVR0TAQH/BAgwBgEB /wIBADAdBgNVHQ4EFgQUljPR5lgXWzR1ioFWZNW+SN6hj88wHwYDVR0jBBgwFoAUj/BLf6guRSSu TVD6Y5qL3uLdG7wwegYIKwYBBQUHAQEEbjBsMC0GCCsGAQUFBzABhiFodHRwOi8vb2NzcC5nbG9i YWxzaWduLmNvbS9yb290cjMwOwYIKwYBBQUHMAKGL2h0dHA6Ly9zZWN1cmUuZ2xvYmFsc2lnbi5j b20vY2FjZXJ0L3Jvb3QtcjMuY3J0MDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9jcmwuZ2xvYmFs c2lnbi5jb20vcm9vdC1yMy5jcmwwWgYDVR0gBFMwUTALBgkrBgEEAaAyASgwQgYKKwYBBAGgMgEo CjA0MDIGCCsGAQUFBwIBFiZodHRwczovL3d3dy5nbG9iYWxzaWduLmNvbS9yZXBvc2l0b3J5LzAN BgkqhkiG9w0BAQsFAAOCAQEAdAXk/XCnDeAOd9nNEUvWPxblOQ/5o/q6OIeTYvoEvUUi2qHUOtbf jBGdTptFsXXe4RgjVF9b6DuizgYfy+cILmvi5hfk3Iq8MAZsgtW+A/otQsJvK2wRatLE61RbzkX8 9/OXEZ1zT7t/q2RiJqzpvV8NChxIj+P7WTtepPm9AIj0Keue+gS2qvzAZAY34ZZeRHgA7g5O4TPJ /oTd+4rgiU++wLDlcZYd/slFkaT3xg4qWDepEMjT4T1qFOQIL+ijUArYS4owpPg9NISTKa1qqKWJ jFoyms0d0GwOniIIbBvhI2MJ7BSY9MYtWVT5jJO3tsVHwj4cp92CSFuGwunFMzCCA18wggJHoAMC AQICCwQAAAAAASFYUwiiMA0GCSqGSIb3DQEBCwUAMEwxIDAeBgNVBAsTF0dsb2JhbFNpZ24gUm9v dCBDQSAtIFIzMRMwEQYDVQQKEwpHbG9iYWxTaWduMRMwEQYDVQQDEwpHbG9iYWxTaWduMB4XDTA5 MDMxODEwMDAwMFoXDTI5MDMxODEwMDAwMFowTDEgMB4GA1UECxMXR2xvYmFsU2lnbiBSb290IENB IC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMTCkdsb2JhbFNpZ24wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDMJXaQeQZ4Ihb1wIO2hMoonv0FdhHFrYhy/EYCQ8eyip0E XyTLLkvhYIJG4VKrDIFHcGzdZNHr9SyjD4I9DCuul9e2FIYQebs7E4B3jAjhSdJqYi8fXvqWaN+J J5U4nwbXPsnLJlkNc96wyOkmDoMVxu9bi9IEYMpJpij2aTv2y8gokeWdimFXN6x0FNx04Druci8u nPvQu7/1PQDhBjPogiuuU6Y6FnOM3UEOIDrAtKeh6bJPkC4yYOlXy7kEkmho5TgmYHWyn3f/kRTv riBJ/K1AFUjRAjFhGV64l++td7dkmnq/X8ET75ti+w1s4FRpFqkD2m7pg5NxdsZphYIXAgMBAAGj QjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBSP8Et/qC5FJK5N UPpjmove4t0bvDANBgkqhkiG9w0BAQsFAAOCAQEAS0DbwFCq/sgM7/eWVEVJu5YACUGssxOGhigH M8pr5nS5ugAtrqQK0/Xx8Q+Kv3NnSoPHRHt44K9ubG8DKY4zOUXDjuS5V2yq/BKW7FPGLeQkbLmU Y/vcU2hnVj6DuM81IcPJaP7O2sJTqsyQiunwXUaMld16WCgaLx3ezQA3QY/tRG3XUyiXfvNnBB4V 14qWtNPeTCekTBtzc3b0F5nCH3oO4y0IrQocLP88q1UOD5F+NuvDV0m+4S4tfGCLw0FREyOdzvcy a5QBqJnnLDMfOjsl0oZAzjsshnjJYS8Uuu7bVW/fhO4FCU29KNhyztNiUGUe65KXgzHZs7XKR1g/ XzCCBUYwggQuoAMCAQICDDz1ZfY+nu573bZBWTANBgkqhkiG9w0BAQsFADBbMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTExMC8GA1UEAxMoR2xvYmFsU2lnbiBHQ0MgUjMg UGVyc29uYWxTaWduIDIgQ0EgMjAyMDAeFw0yMjA5MTAxMjIwMjFaFw0yNTA5MTAxMjIwMjFaMIGK MQswCQYDVQQGEwJJTjESMBAGA1UECBMJS2FybmF0YWthMRIwEAYDVQQHEwlCYW5nYWxvcmUxFjAU BgNVBAoTDUJyb2FkY29tIEluYy4xEzARBgNVBAMTCkthbWFsIERhc3UxJjAkBgkqhkiG9w0BCQEW F2thbWFsLmRhc3VAYnJvYWRjb20uY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA qleMIXx8Zwh2WP/jpzRzyh3axDm5qIpwHevp+tTA7EztFd+5EoriRj5/goGYkJH+HbVOvY9bS1dJ swWsylPFAKpuHPnJb+W9ZTJZnmOd6GHO+37b4rcsxsmbw9IWIy7tPWrKaLQXNjwEp/dum+FWlB8L sCrKsoN6HxDhqzjLGMNy1lpKvkF/+5mDUeBn4hSdjLMRejcZnlnB/vk4aU/sBzFzK6gkhpoH1V+H DxuNuBlySpn/GYqPcDcRZd8EENWqnZrjtjHMk0j7ZfrPGXq8sQkbG3OX+DOwSaefPRq1pLGWBZaZ YuUo5O7CNHo7h7Hc9GgjiW+6X9BjKAzSaDy8jwIDAQABo4IB2DCCAdQwDgYDVR0PAQH/BAQDAgWg MIGjBggrBgEFBQcBAQSBljCBkzBOBggrBgEFBQcwAoZCaHR0cDovL3NlY3VyZS5nbG9iYWxzaWdu LmNvbS9jYWNlcnQvZ3NnY2NyM3BlcnNvbmFsc2lnbjJjYTIwMjAuY3J0MEEGCCsGAQUFBzABhjVo dHRwOi8vb2NzcC5nbG9iYWxzaWduLmNvbS9nc2djY3IzcGVyc29uYWxzaWduMmNhMjAyMDBNBgNV HSAERjBEMEIGCisGAQQBoDIBKAowNDAyBggrBgEFBQcCARYmaHR0cHM6Ly93d3cuZ2xvYmFsc2ln bi5jb20vcmVwb3NpdG9yeS8wCQYDVR0TBAIwADBJBgNVHR8EQjBAMD6gPKA6hjhodHRwOi8vY3Js Lmdsb2JhbHNpZ24uY29tL2dzZ2NjcjNwZXJzb25hbHNpZ24yY2EyMDIwLmNybDAiBgNVHREEGzAZ gRdrYW1hbC5kYXN1QGJyb2FkY29tLmNvbTATBgNVHSUEDDAKBggrBgEFBQcDBDAfBgNVHSMEGDAW gBSWM9HmWBdbNHWKgVZk1b5I3qGPzzAdBgNVHQ4EFgQUcRYSWvAVyA3hgTrQ2c4AFquBsG0wDQYJ KoZIhvcNAQELBQADggEBAIKB2IOweF2sIYGBZTDm+Hwmhga+sjekM167Sk/KwxxvQFwZYP6i0SnR 7aR59vbfVQVaAiZH/a+35EYxP/sXaIM4+E3bFykBuXwcGEnYyEn6MceiOCkjkWQq1Co2JyOdNvkP nAxyPoWlsJtr+N/MF1EYKGpYMdPM7S2T/gujjO9N56BCGu9yJElszWcXHmBl5IsaQqMS36vhsV0b NxffjNkeAdgfN/SS9S9Rj4WXD7pF1M0Xq8gPLCLyXrx1i2KkYOYJsj0PWlC6VRg6E1xXkYDte0VL fAAG4QsETU27E1HBNQyp5zF1PoPCPvq3EnWQnbLgYk+Jz2iwIUwiqwr/bDgxggJtMIICaQIBATBr MFsxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9i YWxTaWduIEdDQyBSMyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwAgw89WX2Pp7ue922QVkwDQYJYIZI AWUDBAIBBQCggdQwLwYJKoZIhvcNAQkEMSIEIOra37rL6Uv5En3ltlBZPIpPslJliVZVab7H8bm3 /ee0MBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTIzMTIwODIwMjEz MVowaQYJKoZIhvcNAQkPMVwwWjALBglghkgBZQMEASowCwYJYIZIAWUDBAEWMAsGCWCGSAFlAwQB AjAKBggqhkiG9w0DBzALBgkqhkiG9w0BAQowCwYJKoZIhvcNAQEHMAsGCWCGSAFlAwQCATANBgkq hkiG9w0BAQEFAASCAQBhwEPcwJCPWFo0H/DJyuaqidPh/pP9VJzs3vfUDxPQqY0L+1TfOr4y7FX3 AkkOzIYL9kKeglul8Vc7mEpS8u0NBC6ntXNl71YfJIkmP136asjZqKhHyRFwFFqPKhRry7px+Um0 LNKf26sstgIM/5ITTJ9rnv3tSXDj7DVv25M2jGlTE+q+wgUE1Mh+EHymhZvoWTC9YP706A/1cC3A lcJ5tUFqctwF3fpL0GUGbsQ222IiL+IeDRZKy5qJWQkeg2/Owa+tYID69Fl2E2WDp+l80VLacjXT KRHqXyIR6Hhlt6u5/vFPjf9MkKjncnTN+F8WdowMQJtXRFlt94KggiN9 --0000000000007368f0060c0554f0--